VintageBigBlue.org

 

RE: [Losmandy_users] PECprep anlysis of GM8 Mount


Apr 30, 2001

 


----------------------------

#3860 Apr 30, 2001

In a message dated 4/30/01 9:12:53 AM Central Daylight Time,

Losmandy_users@yahoogroups.com writes:



< ou mentioned the altitude adjuster has play when loose. You don't

use it loose. Once set, you tighten it down.



As for the RA, will you have slop, yes. Should there be NO!!! but

thats a LOSMANDY problem IMHO. I have used other mounts that are as

rigid as the rock of gibralter. even my old mount did not have this

kind of play.



In my opinion there is a problem when you have a C11 and with a 7mm

nagler in, you touch the focuser and your objects rocks in and out of

the fov. Slop!! >>



Hi,

I just received a NIB GM8 from Astronomics for my Tak Sky 90. When fully

assembled I noticed that there was play in the DEC axis. I observed Jupiter

through the Tak and noticed that when I tried to focas the planet moved

halfway across the field!



Disappointed, I emailed Scott Losmandy and received a trite reply that stated

"what you need to know is in the manual". Long story short, I had to remove

the dec worm cover, and adjust the worm / gear. Then I noticed terrible slop

in the RA, so I removed the RE worm cover and discovered the worm moving

laterally when I changed directions. I was able to adjust the block and

remove about 75% of the slop.



Personally, I think the QC at Losmandy stinks, and the customer service is

nonexistent. Nothing like having to work two hours on a brand new mount to

make it work properly. Now I know why the AP and Tak mounts cost more.



Best regards,

Doug Finch



----------------------------

#3865 Apr 30, 2001

The C11 problem while focusing sounds like image shift of the mirror.

RA slop is a problem bringing the objet into the FOV,but once it's

there the mount "rests" on a certain part of its slop. Shifting while

foucisng is probably image shift. Much can be learned on sct-user on

this web site.



greg nowell



--- In Losmandy_users@y..., astrocopdf@a... wrote:

> In a message dated 4/30/01 9:12:53 AM Central Daylight Time,

> Losmandy_users@y... writes:

>

> < ou mentioned the altitude adjuster has play when loose. You

don't

> use it loose. Once set, you tighten it down.

>

> As for the RA, will you have slop, yes. Should there be NO!!! but

> thats a LOSMANDY problem IMHO. I have used other mounts that are

as

> rigid as the rock of gibralter. even my old mount did not have

this

> kind of play.

>

> In my opinion there is a problem when you have a C11 and with a 7mm

> nagler in, you touch the focuser and your objects rocks in and out

of

> the fov. Slop!!

> >>

>

> Hi,

> I just received a NIB GM8 from Astronomics for my Tak Sky 90. When

fully

> assembled I noticed that there was play in the DEC axis. I observed

Jupiter

> through the Tak and noticed that when I tried to focas the planet

moved

> halfway across the field!

>

> Disappointed, I emailed Scott Losmandy and received a trite reply

that stated

> "what you need to know is in the manual". Long story short, I had to

remove

> the dec worm cover, and adjust the worm / gear. Then I noticed

terrible slop

> in the RA, so I removed the RE worm cover and discovered the worm

moving

> laterally when I changed directions. I was able to adjust the block

and

> remove about 75% of the slop.

>

> Personally, I think the QC at Losmandy stinks, and the customer

service is

> nonexistent. Nothing like having to work two hours on a brand new

mount to

> make it work properly. Now I know why the AP and Tak mounts cost

more.

>

> Best regards,

> Doug Finch



----------------------------

#6812 Nov 19, 2001

Well, I am attempting to mount my TV85 on my GM8 now. I have the G11

saddle and TeleVue dovetail plate. The problem I am having is that

with the dovetail on the TV85, I can't clear the saddle to mount the

scope! Either focuser or the objective end hits and won't the let

dovetail slide on!



The only way I can get it to work is if I rotate the tube in turn the

diagonal to one side. This is very awkward in the dark. There has

to be another way!



Rick



----------------------------

#6823 Nov 20, 2001

On 11/19/01 8:40 PM nicnrick@... wrote:

> Well, I am attempting to mount my TV85 on my GM8 now. I have the G11

> saddle and TeleVue dovetail plate. The problem I am having is that

> with the dovetail on the TV85, I can't clear the saddle to mount the

> scope! Either focuser or the objective end hits and won't the let

> dovetail slide on!

>

> The only way I can get it to work is if I rotate the tube in turn the

> diagonal to one side. This is very awkward in the dark. There has

> to be another way!

>

> Rick



Perhaps you need a tip-in style dovetail saddle, rather than a slide-in.



Regards,

Robin



Astro Accessories by Robin Casady

Stainless Steel Weights & Dovetail Saddles

www.CarmelCoast.com/Astro/sales.html



Casady & Greene, Inc.

www.casadyg.com







----------------------------

#16343 Jul 26, 2003

Hi group,



I recently purchased a Televue NP-101 and I am currently using it on

a CG-5 mount. I am considering the Losmandy GM-8 mount as an

upgrade and had a few questions. I would appreciate anyone's help

in answering my questions about this mount.



1) How does this mount work with the TV NP-101?

I am strictly a visual observer.



2) What adapting plate would I need to attach the Televue Ring

mount to the GM-8 EQ head?



3) Will this plate, when attached to the NP-101's ring mount, fit

in the hard carrying case?

Currently, I am using the AGP-1009 mounting plate which fits in the

hard case while still attached to the ring mount. This way I can

keep the scope in the case when not in use and then set it up fast

when I want to observe.



4) Are there any other accessories that are recommended?



5) How is the reliability of the mount and what is the warranty?

I e-mailed Losmandy but have not heard back from them. Not a good

sign.





Thanks for your help,

Jeff



----------------------------

#16344 Jul 26, 2003

Jeff:

GM8 is what I have and have used for 1-1/2 years. Clamshell bolts to a GM8

UV plate ($35) with 2 1/4x20 hex head bolts. I do visual only with NO

problems. I love it. It should fit in case...check it out visually. Get a

Starbeam finder. Check the website for warrantee. If you want to talk to

Scott .. phone him .. he is a good guy.

Tom in Sacramento ----- Original Message -----

From: "jeffreyk1965" jeffk1965@...>

To: Losmandy_users@yahoogroups.com>

Sent: Saturday, July 26, 2003 2:47 PM

Subject: [Losmandy_users] Questions about GM8 mount





> Hi group,

>

> I recently purchased a Televue NP-101 and I am currently using it on

> a CG-5 mount. I am considering the Losmandy GM-8 mount as an

> upgrade and had a few questions. I would appreciate anyone's help

> in answering my questions about this mount.

>

> 1) How does this mount work with the TV NP-101?

> I am strictly a visual observer.

>

> 2) What adapting plate would I need to attach the Televue Ring

> mount to the GM-8 EQ head?

>

> 3) Will this plate, when attached to the NP-101's ring mount, fit

> in the hard carrying case?

> Currently, I am using the AGP-1009 mounting plate which fits in the

> hard case while still attached to the ring mount. This way I can

> keep the scope in the case when not in use and then set it up fast

> when I want to observe.

>

> 4) Are there any other accessories that are recommended?

>

> 5) How is the reliability of the mount and what is the warranty?

> I e-mailed Losmandy but have not heard back from them. Not a good

> sign.

>

>

> Thanks for your help,

> Jeff

>

>

>

>

> To unsubscribe from this group, send an email to:

> Losmandy_users-unsubscribe@egroups.com

>

>

>

> Your use of Yahoo! Groups is subject to docs.yahoo.com/info/terms/

>

>



----------------------------

#16345 Jul 26, 2003

--- In Losmandy_users@yahoogroups.com, "jeffreyk1965"

jeffk1965@p...> wrote:

> I am considering the Losmandy GM-8 mount

> 1) How does this mount work with the TV NP-101?

> I am strictly a visual observer.



The GM-8 is certainly adequate for visual use with the NP-101. It is

very steady, even at high magnifications and is a "rock" even in

moderate breezes. For visual, this is probably all the mount you

will ever need.

> 2) What adapting plate would I need to attach the Televue Ring

> mount to the GM-8 EQ head?



There is a "universal" dovetail plate, called the "GM-8 UV" on the

Losmandy site, approximately 7-inches long that I use with my NP-

101. Two 1/4-20 bolts, supplied with the dovetail, attach the

dovetail to the two bolt holes in the TV clamshell. Simply tell your

dealer and he/she should set you up with the correct dovetail when

you order your mount.

> 3) Will this plate, when attached to the NP-101's ring mount, fit

> in the hard carrying case?



Yes, it will, unless you have moved the clamshell very far from

center of the OTA. You may have noticed a small cutout in the

carrying case that accomodates the dovetail nicely.

> 4) Are there any other accessories that are recommended?



There are various accessories, like aluminum motor

covers, "upgraded" clutch knobs, but I have a "factory" GM-8 with no

Gemini. I did, however, get the polar alignment scope.

> 5) How is the reliability of the mount and what is the warranty?

> I e-mailed Losmandy but have not heard back from them. Not a

> good sign.



I do not recall the warranty, but I've had mine for nearly a year

without problems. Now that I'm more experienced with the mount, I

think I need to make some adjustments to how the gears are meshing,

but I am overall satisfied with the product.



I don't think e-mail is the best medium to contact Scott with. I

would suggest going through a dealer; or you could telephone him

directly.



Regards,

Lou







----------------------------

#16348 Jul 27, 2003

Thank you very much for the information!!



Jeff







--- In Losmandy_users@yahoogroups.com, "Louis Marchesi"

lmarchesi@y...> wrote: > --- In Losmandy_users@yahoogroups.com, "jeffreyk1965"

> jeffk1965@p...> wrote:

>

> > I am considering the Losmandy GM-8 mount

> > 1) How does this mount work with the TV NP-101?

> > I am strictly a visual observer.

>

> The GM-8 is certainly adequate for visual use with the NP-101. It

is > very steady, even at high magnifications and is a "rock" even in

> moderate breezes. For visual, this is probably all the mount you

> will ever need.

>

> > 2) What adapting plate would I need to attach the Televue Ring

> > mount to the GM-8 EQ head?

>

> There is a "universal" dovetail plate, called the "GM-8 UV" on the

> Losmandy site, approximately 7-inches long that I use with my NP-

> 101. Two 1/4-20 bolts, supplied with the dovetail, attach the

> dovetail to the two bolt holes in the TV clamshell. Simply tell

your > dealer and he/she should set you up with the correct dovetail when

> you order your mount.

>

> > 3) Will this plate, when attached to the NP-101's ring mount,

fit > > in the hard carrying case?

>

> Yes, it will, unless you have moved the clamshell very far from

> center of the OTA. You may have noticed a small cutout in the

> carrying case that accomodates the dovetail nicely.

>

> > 4) Are there any other accessories that are recommended?

>

> There are various accessories, like aluminum motor

> covers, "upgraded" clutch knobs, but I have a "factory" GM-8 with

no > Gemini. I did, however, get the polar alignment scope.

>

> > 5) How is the reliability of the mount and what is the warranty?

> > I e-mailed Losmandy but have not heard back from them. Not

a > > good sign.

>

> I do not recall the warranty, but I've had mine for nearly a year

> without problems. Now that I'm more experienced with the mount, I

> think I need to make some adjustments to how the gears are

meshing, > but I am overall satisfied with the product.

>

> I don't think e-mail is the best medium to contact Scott with. I

> would suggest going through a dealer; or you could telephone him

> directly.

>

> Regards,

> Lou



----------------------------

#16350 Jul 27, 2003

Hi Lou,



Thanks for your help. A couple more questions for you as I really

appreciate your help as I have never seen one of these mounts

before.



Are the aluminum motor covers a necessity? Do the motors have any

protective covering on them? Are they easy to put on?



Lastly, can the Gemini be added at a later date?





Thanks again,

Jeff





--- In Losmandy_users@yahoogroups.com, "Louis Marchesi"

lmarchesi@y...> wrote: > --- In Losmandy_users@yahoogroups.com, "jeffreyk1965"

> jeffk1965@p...> wrote:

>

> > I am considering the Losmandy GM-8 mount

> > 1) How does this mount work with the TV NP-101?

> > I am strictly a visual observer.

>

> The GM-8 is certainly adequate for visual use with the NP-101. It

is > very steady, even at high magnifications and is a "rock" even in

> moderate breezes. For visual, this is probably all the mount you

> will ever need.

>

> > 2) What adapting plate would I need to attach the Televue Ring

> > mount to the GM-8 EQ head?

>

> There is a "universal" dovetail plate, called the "GM-8 UV" on the

> Losmandy site, approximately 7-inches long that I use with my NP-

> 101. Two 1/4-20 bolts, supplied with the dovetail, attach the

> dovetail to the two bolt holes in the TV clamshell. Simply tell

your > dealer and he/she should set you up with the correct dovetail when

> you order your mount.

>

> > 3) Will this plate, when attached to the NP-101's ring mount,

fit > > in the hard carrying case?

>

> Yes, it will, unless you have moved the clamshell very far from

> center of the OTA. You may have noticed a small cutout in the

> carrying case that accomodates the dovetail nicely.

>

> > 4) Are there any other accessories that are recommended?

>

> There are various accessories, like aluminum motor

> covers, "upgraded" clutch knobs, but I have a "factory" GM-8 with

no > Gemini. I did, however, get the polar alignment scope.

>

> > 5) How is the reliability of the mount and what is the warranty?

> > I e-mailed Losmandy but have not heard back from them. Not

a > > good sign.

>

> I do not recall the warranty, but I've had mine for nearly a year

> without problems. Now that I'm more experienced with the mount, I

> think I need to make some adjustments to how the gears are

meshing, > but I am overall satisfied with the product.

>

> I don't think e-mail is the best medium to contact Scott with. I

> would suggest going through a dealer; or you could telephone him

> directly.

>

> Regards,

> Lou







----------------------------

#16351 Jul 27, 2003

Hi,



I cannot find the Universal dovetail Plate on the Losmandy website

that is only 7" long. The one I see is 13.5". That would be too

long to leave attached while the scope is in its hard case.



Am I looking at the right plate?



Thanks,

jeff





--- In Losmandy_users@yahoogroups.com, "Louis Marchesi"

lmarchesi@y...> wrote: > --- In Losmandy_users@yahoogroups.com, "jeffreyk1965"

> jeffk1965@p...> wrote:

>

> > I am considering the Losmandy GM-8 mount

> > 1) How does this mount work with the TV NP-101?

> > I am strictly a visual observer.

>

> The GM-8 is certainly adequate for visual use with the NP-101. It

is > very steady, even at high magnifications and is a "rock" even in

> moderate breezes. For visual, this is probably all the mount you

> will ever need.

>

> > 2) What adapting plate would I need to attach the Televue Ring

> > mount to the GM-8 EQ head?

>

> There is a "universal" dovetail plate, called the "GM-8 UV" on the

> Losmandy site, approximately 7-inches long that I use with my NP-

> 101. Two 1/4-20 bolts, supplied with the dovetail, attach the

> dovetail to the two bolt holes in the TV clamshell. Simply tell

your > dealer and he/she should set you up with the correct dovetail when

> you order your mount.

>

> > 3) Will this plate, when attached to the NP-101's ring mount,

fit > > in the hard carrying case?

>

> Yes, it will, unless you have moved the clamshell very far from

> center of the OTA. You may have noticed a small cutout in the

> carrying case that accomodates the dovetail nicely.

>

> > 4) Are there any other accessories that are recommended?

>

> There are various accessories, like aluminum motor

> covers, "upgraded" clutch knobs, but I have a "factory" GM-8 with

no > Gemini. I did, however, get the polar alignment scope.

>

> > 5) How is the reliability of the mount and what is the warranty?

> > I e-mailed Losmandy but have not heard back from them. Not

a > > good sign.

>

> I do not recall the warranty, but I've had mine for nearly a year

> without problems. Now that I'm more experienced with the mount, I

> think I need to make some adjustments to how the gears are

meshing, > but I am overall satisfied with the product.

>

> I don't think e-mail is the best medium to contact Scott with. I

> would suggest going through a dealer; or you could telephone him

> directly.

>

> Regards,

> Lou



----------------------------

#16352 Jul 27, 2003

--- In Losmandy_users@yahoogroups.com, "jeffreyk1965"

jeffk1965@p...> wrote:

> Are the aluminum motor covers a necessity? Do the motors have any

> protective covering on them? Are they easy to put on?



I do not own the aluminum motor covers. The "stock" GM-8 comes with

Delrin, a "supple" plastic that covers the motors. The aluminum

covers, IMO, are more aesthetically appealing, but not a necessity.

I suppose it is easier to damage a motor with only the Delrin cover.

I can't imagine they would be difficult to install ... probably just

a couple of mounting bolts or similar.

> Lastly, can the Gemini be added at a later date?



Yes, it can, but it costs less when ordered with the mount. On the

Losmandy site, the GM-8 w/o Gemini is 1495. The retrofit kit is

1595. It is 2495 ordered with Gemini.



Hope this is helpful,

Lou



----------------------------

#16353 Jul 27, 2003

--- In Losmandy_users@yahoogroups.com, "jeffreyk1965"

jeffk1965@p...> wrote:

> I cannot find the Universal dovetail Plate on the Losmandy website

> that is only 7" long. The one I see is 13.5". That would be too

> long to leave attached while the scope is in its hard case.

>

> Am I looking at the right plate?



That's not the right plate. Follow the "Accessories" link rather

than the "Dovetail Systems" link. I think you may have been looking

at the DUP. This dovetail is for the G-11, not the GM-8.



Regards,

Lou



----------------------------

#16361 Jul 28, 2003

Jeff,

I have the motor covers for my GM-8. The stock rubber covers don't

seem very protective to me. They certainly look flimsy. I didn't

have too much trouble installing the replacemnt covers, but there

were no directions. For each cover there are 2 sets of: a threaded

stud, a stand off, and an allen head screw. If you get them and

have trouble, I can give you more details.



Phil S.



--- In Losmandy_users@yahoogroups.com, "jeffreyk1965"

jeffk1965@p...> wrote: > Hi Lou,

>

> Thanks for your help. A couple more questions for you as I really

> appreciate your help as I have never seen one of these mounts

> before.

>

> Are the aluminum motor covers a necessity? Do the motors have any

> protective covering on them? Are they easy to put on?

>

> Lastly, can the Gemini be added at a later date?

>

>

> Thanks again,

> Jeff

>

>

> --- In Losmandy_users@yahoogroups.com, "Louis Marchesi"

> lmarchesi@y...> wrote:

> > --- In Losmandy_users@yahoogroups.com, "jeffreyk1965"

> > jeffk1965@p...> wrote:

> >

> > > I am considering the Losmandy GM-8 mount

> > > 1) How does this mount work with the TV NP-101?

> > > I am strictly a visual observer.

> >

> > The GM-8 is certainly adequate for visual use with the NP-101.

It > is

> > very steady, even at high magnifications and is a "rock" even in

> > moderate breezes. For visual, this is probably all the mount you

> > will ever need.

> >

> > > 2) What adapting plate would I need to attach the Televue

Ring > > > mount to the GM-8 EQ head?

> >

> > There is a "universal" dovetail plate, called the "GM-8 UV" on

the > > Losmandy site, approximately 7-inches long that I use with my NP-

> > 101. Two 1/4-20 bolts, supplied with the dovetail, attach the

> > dovetail to the two bolt holes in the TV clamshell. Simply tell

> your

> > dealer and he/she should set you up with the correct dovetail

when > > you order your mount.

> >

> > > 3) Will this plate, when attached to the NP-101's ring mount,

> fit

> > > in the hard carrying case?

> >

> > Yes, it will, unless you have moved the clamshell very far from

> > center of the OTA. You may have noticed a small cutout in the

> > carrying case that accomodates the dovetail nicely.

> >

> > > 4) Are there any other accessories that are recommended?

> >

> > There are various accessories, like aluminum motor

> > covers, "upgraded" clutch knobs, but I have a "factory" GM-8

with > no

> > Gemini. I did, however, get the polar alignment scope.

> >

> > > 5) How is the reliability of the mount and what is the

warranty? > > > I e-mailed Losmandy but have not heard back from them. Not

> a

> > > good sign.

> >

> > I do not recall the warranty, but I've had mine for nearly a

year > > without problems. Now that I'm more experienced with the mount,

I > > think I need to make some adjustments to how the gears are

> meshing,

> > but I am overall satisfied with the product.

> >

> > I don't think e-mail is the best medium to contact Scott with. I

> > would suggest going through a dealer; or you could telephone him

> > directly.

> >

> > Regards,

> > Lou







----------------------------

#16398 Aug 1, 2003

Hi,



Is the plate the one that is labelled "GM 8 UV"?

This is the plate that will attach to the tube ring of my TV NP-101

and fit in the hard case.



Also, should I order it direct from Losmandy?



Thanks again,

Jeff







--- In Losmandy_users@yahoogroups.com, "Louis Marchesi"

lmarchesi@y...> wrote: > --- In Losmandy_users@yahoogroups.com, "jeffreyk1965"

> jeffk1965@p...> wrote:

>

> > I cannot find the Universal dovetail Plate on the Losmandy

website > > that is only 7" long. The one I see is 13.5". That would be

too > > long to leave attached while the scope is in its hard case.

> >

> > Am I looking at the right plate?

>

> That's not the right plate. Follow the "Accessories" link rather

> than the "Dovetail Systems" link. I think you may have been

looking > at the DUP. This dovetail is for the G-11, not the GM-8.

>

> Regards,

> Lou



----------------------------

#16399 Aug 1, 2003

Yes. GM 8 UV will attach to your TVNP-101. You can get from any Losmandy

dealer. It might be faster than from Losmandy and the price is the same. Try

OPT/Anacortes/Astronomics etc. 2 each 1/4x20 hex head bolts work.

Tom ----- Original Message -----

From: "jeffreyk1965" jeffk1965@...>

To: Losmandy_users@yahoogroups.com>

Sent: Friday, August 01, 2003 2:29 PM

Subject: [Losmandy_users] Re: Questions about GM8 mount





> Hi,

>

> Is the plate the one that is labelled "GM 8 UV"?

> This is the plate that will attach to the tube ring of my TV NP-101

> and fit in the hard case.

>

> Also, should I order it direct from Losmandy?

>

> Thanks again,

> Jeff

>

>

>

> --- In Losmandy_users@yahoogroups.com, "Louis Marchesi"

> lmarchesi@y...> wrote:

> > --- In Losmandy_users@yahoogroups.com, "jeffreyk1965"

> > jeffk1965@p...> wrote:

> >

> > > I cannot find the Universal dovetail Plate on the Losmandy

> website

> > > that is only 7" long. The one I see is 13.5". That would be

> too

> > > long to leave attached while the scope is in its hard case.

> > >

> > > Am I looking at the right plate?

> >

> > That's not the right plate. Follow the "Accessories" link rather

> > than the "Dovetail Systems" link. I think you may have been

> looking

> > at the DUP. This dovetail is for the G-11, not the GM-8.

> >

> > Regards,

> > Lou

>

>

>

> To unsubscribe from this group, send an email to:

> Losmandy_users-unsubscribe@egroups.com

>

>

>

> Your use of Yahoo! Groups is subject to docs.yahoo.com/info/terms/

>



----------------------------

#16400 Aug 1, 2003

Hi,



I have a price list from Astronomics. They have this plate listed

but state that it is for the older GM8 mount. Will this plate fit

on a new GM8? Does the plate come with the screws to attach it to

the ring mount? I have Teleuve AGP-1009 plate that I use to attach

the ring mount to a mounting plate for my CG-5 mount. Will the two

screws from that plate work?



Thanks again. I really appreciate your help,



Jeff







--- In Losmandy_users@yahoogroups.com, "thomas_barnard"

thomas_barnard@s...> wrote: > Yes. GM 8 UV will attach to your TVNP-101. You can get from any

Losmandy > dealer. It might be faster than from Losmandy and the price is the

same. Try > OPT/Anacortes/Astronomics etc. 2 each 1/4x20 hex head bolts work.

> Tom

> ----- Original Message -----

> From: "jeffreyk1965" jeffk1965@p...>

> To: Losmandy_users@yahoogroups.com>

> Sent: Friday, August 01, 2003 2:29 PM

> Subject: [Losmandy_users] Re: Questions about GM8 mount

>

>

> > Hi,

> >

> > Is the plate the one that is labelled "GM 8 UV"?

> > This is the plate that will attach to the tube ring of my TV NP-

101 > > and fit in the hard case.

> >

> > Also, should I order it direct from Losmandy?

> >

> > Thanks again,

> > Jeff

> >

> >

> >

> > --- In Losmandy_users@yahoogroups.com, "Louis Marchesi"

> > lmarchesi@y...> wrote:

> > > --- In Losmandy_users@yahoogroups.com, "jeffreyk1965"

> > > jeffk1965@p...> wrote:

> > >

> > > > I cannot find the Universal dovetail Plate on the Losmandy

> > website

> > > > that is only 7" long. The one I see is 13.5". That would be

> > too

> > > > long to leave attached while the scope is in its hard case.

> > > >

> > > > Am I looking at the right plate?

> > >

> > > That's not the right plate. Follow the "Accessories" link

rather > > > than the "Dovetail Systems" link. I think you may have been

> > looking

> > > at the DUP. This dovetail is for the G-11, not the GM-8.

> > >

> > > Regards,

> > > Lou

> >

> >

> >

> > To unsubscribe from this group, send an email to:

> > Losmandy_users-unsubscribe@egroups.com

> >

> >

> >

> > Your use of Yahoo! Groups is subject to

docs.yahoo.com/info/terms/ > >







----------------------------

#16408 Aug 2, 2003

My new GM8 mount does NOT take the GM8 UV plate. Instead it

uses the DUP (13.5 in) or DUP-S (6.75 in) plates that also fit the

G-11 and attach directly to the TeleVue camshell ring. The

plates do come with the hex bolts and a safety bolt to keep your

OTA from sliding out. Astronomics, Anacortes, etc. should be

able to make sure you get the right plate.



Larry



--- In Losmandy_users@yahoogroups.com, "jeffreyk1965"

jeffk1965@p...> wrote: > Hi,

>

> I have a price list from Astronomics. They have this plate listed

> but state that it is for the older GM8 mount. Will this plate fit

> on a new GM8? Does the plate come with the screws to attach

it to > the ring mount? I have Teleuve AGP-1009 plate that I use to

attach > the ring mount to a mounting plate for my CG-5 mount. Will the

two > screws from that plate work?

>

> Thanks again. I really appreciate your help,

>

> Jeff



----------------------------

#16412 Aug 2, 2003

--- In Losmandy_users@yahoogroups.com, "lgunther666"

larry.gunther@s...> wrote: > My new GM8 mount does NOT take the GM8 UV plate. Instead it

> uses the DUP (13.5 in) or DUP-S (6.75 in) plates that also fit the

> G-11 and attach directly to the TeleVue camshell ring.



Larry,



When was your GM-8 built? I received mine in November, 2002 and it

accepts the GM-8 UV plate and NOT the dovetails that fit the G-11

saddle.



Perhaps Scott changed the GM-8 design since last year.



Regards,

Lou



----------------------------

#16413 Aug 2, 2003

I ordered my GM8 from ATWB on June 6 of this year. At the time,

I ordered the mount and several other items including the GM8

UV plate over the web. The next day, Brian Tottenham from ATWB

emailed me back telling me that the new GM8s now used the

G-11 sized saddle and I needed the larger DUP or DUP-S plate. I

don't know when Losmandy made the switch.



Larry,

--- In Losmandy_users@yahoogroups.com, "Louis Marchesi"

lmarchesi@y...> wrote: >

> When was your GM-8 built? I received mine in November,

2002

and it > accepts the GM-8 UV plate and NOT the dovetails that fit the

G-11 > saddle.

>

> Perhaps Scott changed the GM-8 design since last year.

>

> Regards,

> Lou



----------------------------

#16415 Aug 2, 2003

Hi,



Does this mean that there is no plate available for the GM8 that

will fit in the carrying case while attached to my TV-101NP?



Thanks again,

Jeff





--- In Losmandy_users@yahoogroups.com, "lgunther666"

larry.gunther@s...> wrote: > I ordered my GM8 from ATWB on June 6 of this year. At the time,

> I ordered the mount and several other items including the GM8

> UV plate over the web. The next day, Brian Tottenham from ATWB

> emailed me back telling me that the new GM8s now used the

> G-11 sized saddle and I needed the larger DUP or DUP-S plate. I

> don't know when Losmandy made the switch.

>

> Larry,

> --- In Losmandy_users@yahoogroups.com, "Louis Marchesi"

> lmarchesi@y...> wrote:

> >

> > When was your GM-8 built? I received mine in November,

> 2002

> and it

> > accepts the GM-8 UV plate and NOT the dovetails that fit the

> G-11

> > saddle.

> >

> > Perhaps Scott changed the GM-8 design since last year.

> >

> > Regards,

> > Lou



----------------------------

#16416 Aug 2, 2003

Hi,



How do you power your mount? Do you use a battery pack with "D"

batteries like my CG-5 mount?



Thanks,

jeff







--- In Losmandy_users@yahoogroups.com, "lgunther666"

larry.gunther@s...> wrote: > I ordered my GM8 from ATWB on June 6 of this year. At the time,

> I ordered the mount and several other items including the GM8

> UV plate over the web. The next day, Brian Tottenham from ATWB

> emailed me back telling me that the new GM8s now used the

> G-11 sized saddle and I needed the larger DUP or DUP-S plate. I

> don't know when Losmandy made the switch.

>

> Larry,

> --- In Losmandy_users@yahoogroups.com, "Louis Marchesi"

> lmarchesi@y...> wrote:

> >

> > When was your GM-8 built? I received mine in November,

> 2002

> and it

> > accepts the GM-8 UV plate and NOT the dovetails that fit the

> G-11

> > saddle.

> >

> > Perhaps Scott changed the GM-8 design since last year.

> >

> > Regards,

> > Lou



----------------------------

#16417 Aug 2, 2003

Jeff:

Please read the archives of this group...you will find many answers to your

many questions. I use a Kendrick battery.

Adjust your clamshell/Dovetail plate to fit the case.

Tom

----- Original Message -----

From: "jeffreyk1965" jeffk1965@...>

To: Losmandy_users@yahoogroups.com>

Sent: Saturday, August 02, 2003 3:50 PM

Subject: [Losmandy_users] Re: Questions about GM8 mount - Power





> Hi,

>

> How do you power your mount? Do you use a battery pack with "D"

> batteries like my CG-5 mount?

>

> Thanks,

> jeff

>

>

>







----------------------------

#16419 Aug 2, 2003

--- In Losmandy_users@yahoogroups.com, "jeffreyk1965"

jeffk1965@p...> wrote: > Hi,

>

> Does this mean that there is no plate available for the GM8 that

> will fit in the carrying case while attached to my TV-101NP?



The NP-101 with DUP-S dovetail combination fits in the carrying case.



Regards,

Lou



----------------------------

#16964 Sep 6, 2003

Hello,



I have a 15LB (25" long) F9 OTA that will probably weigh close to

18 or 19 pounds once I add my OM1 camera body, OAG and ST4

autoguider (I'll also need a Losmandy DUP adapter & don't know

how much that weighs, or if it should be figured into the

equation). I know there is a rule of thumb to keep the weight the

mount carries at 1/2 or less of its capacity and it would appear

I'm going over by a few pounds.



Is the GM8 capable of well guided, long exposure, 60-90 minute

photos with the arrangement I've described or am I asking for

trouble?



Thanks,



Allan



----------------------------

#16966 Sep 6, 2003

--- awhetzel2000 whetzel@...> wrote: > Is the GM8 capable of well guided, long exposure, 60-90 minute

> photos with the arrangement I've described or am I asking for

> trouble?



Yes it is capable. Personally, because my setup is much closer to 30

pounds (if not over) than yours, I've just sold my GM-8 and will turn

the proceeds over to a G-11. But a review of my photos (the few I

managed on the one good night we had) from the OSP shows that the GM-8

did quite well. I went as long as 135 minutes and had a couple shorter

ones in the range of 60-80 minutes. I had flexure of some sort in the

longest (probably guidescope shifting), but everything else looked

great.



Alan



---------------

Do you Yahoo!?

Yahoo! SiteBuilder - Free, easy-to-use web site design software

sitebuilder.yahoo.com



----------------------------

#30606 Aug 12, 2006

Greetings from the Big Island of Hawaii. I am a potential new user

and would like to recieve some input which may allow me to make the

proper purchase the first time around. I am relatively new to this

nocturnal endeavor and have been enjoying it for the past 3 years.

I am looking for a mount for a 12lb. refractor which will withstand

wind induced vibrations better than the 12lb. rated import

equatorial mount on a very good wooden tripod using vibration

suppression pads currently in use. This setup is adequate for low

to mid power viewing and understandably does not permit undisturbed

high power work. It is a non go to mount meant for visual

observing. Unfortunately, resources are finite, and I have a budget

allowing either a GM8 with the Gemini, or perhaps the Vixen Sphinx.

I am leaning towards the Losmandy because I have seen the GM11 and

appreciate it's finish and solid appearance. I have not had the

opportunity to examine a Sphinx or GP DX D2 however. I have very

little experience using a go to mount other than toying with an ETX

70 some years back. In light of this, I am approaching the thought

of the Gemini with hesitation and would consider forgoing the

computer and instead directing the funds towards the tripod meant

for the GM11 for increased stability. Would the tripod that is

provided with the GM8 be sufficient for the load requirements that I

have? Does the accessory tray increase rigidity? Are there other

ways to increase the integrity of the tripod? { my concern

regarding the tripod stems from a review on Anacortes, and the

reccomendation of a GM11 user.} I have only rudimentary computer

skills which may explain my trepidation regarding the Gemini system.

I currently locate objects by memory and only know the names of just

a few stars. {alignment difficulties?] Should I decide to proceed

with the GM8, are there certain accessories that are indispensable?

What would be the preferred power source for remote viewing sites?

Pardon me for asking so many questions and thank you for your

patience and understanding.



----------------------------

#30611 Aug 13, 2006

I currently use a GM-8, G-11 and GM-200. All have the Losmandy

setting circles. The difference in weight between the GM-8 and G-11

are not much different. If funds are limited, I would go for the G-11

with digital circles and use it as a push to scope, and skip the

Gemini expense and confusion.



Most of us get aperture fever. You can always put a small scope on a

big mount, but the reverse isn't true.



When the imaging bug bite, the 360 tooth gears on the G-11 are more

accurate than the 180'son the GM-8.



STU



--- In Losmandy_users@yahoogroups.com, "stars19.47deg"

stars19.47deg@...> wrote: >

> Greetings from the Big Island of Hawaii. I am a potential new user

> and would like to recieve some input which may allow me to make the

> proper purchase the first time around. I am relatively new to this

> nocturnal endeavor and have been enjoying it for the past 3 years.

> I am looking for a mount for a 12lb. refractor which will withstand

> wind induced vibrations better than the 12lb. rated import

> equatorial mount on a very good wooden tripod using vibration

> suppression pads currently in use. This setup is adequate for low

> to mid power viewing and understandably does not permit undisturbed

> high power work. It is a non go to mount meant for visual

> observing. Unfortunately, resources are finite, and I have a

budget > allowing either a GM8 with the Gemini, or perhaps the Vixen

Sphinx. > I am leaning towards the Losmandy because I have seen the GM11 and

> appreciate it's finish and solid appearance. I have not had the

> opportunity to examine a Sphinx or GP DX D2 however. I have very

> little experience using a go to mount other than toying with an ETX

> 70 some years back. In light of this, I am approaching the thought

> of the Gemini with hesitation and would consider forgoing the

> computer and instead directing the funds towards the tripod meant

> for the GM11 for increased stability. Would the tripod that is

> provided with the GM8 be sufficient for the load requirements that

I > have? Does the accessory tray increase rigidity? Are there other

> ways to increase the integrity of the tripod? { my concern

> regarding the tripod stems from a review on Anacortes, and the

> reccomendation of a GM11 user.} I have only rudimentary computer

> skills which may explain my trepidation regarding the Gemini

system. > I currently locate objects by memory and only know the names of

just > a few stars. {alignment difficulties?] Should I decide to proceed

> with the GM8, are there certain accessories that are

indispensable? > What would be the preferred power source for remote viewing sites?

> Pardon me for asking so many questions and thank you for your

> patience and understanding.

>







----------------------------

#30612 Aug 13, 2006

I used a TV-85 on a GM-8 and it did fine, even for imaging. Other than a reference to '12

lbs', you don't say what the OTA is. I'm guessing a 4". Unless it is a very long focal

length, the GM-8 will do fine for visual use. If you CAN afford it, of course, a bigger,

stronger mount is always better. If you feel the need to use a GOTO computer, then go

with the smaller mount and Gemini. If imaging is in your future, I would do whatever it

takes to include Gemini in your purchase. And again, especially for imaging, a bigger,

stronger mount is preferred.



Remember this, it's an expensive hobby... 8-)



Alan

> --- In Losmandy_users@yahoogroups.com, "stars19.47deg"

> stars19.47deg@...> wrote:

> > Greetings from the Big Island of Hawaii. I am a potential new user

> > and would like to recieve some input which may allow me to make the

> > proper purchase the first time around. I am relatively new to this

> > nocturnal endeavor and have been enjoying it for the past 3 years.

> > I am looking for a mount for a 12lb. refractor which will withstand

> > wind induced vibrations better than the 12lb. rated import

> > equatorial mount on a very good wooden tripod using vibration

> > suppression pads currently in use. This setup is adequate for low

> > to mid power viewing and understandably does not permit undisturbed

> > high power work. It is a non go to mount meant for visual

> > observing. Unfortunately, resources are finite, and I have a

> budget

> > allowing either a GM8 with the Gemini, or perhaps the Vixen

> Sphinx.

> > I am leaning towards the Losmandy because I have seen the GM11 and

> > appreciate it's finish and solid appearance. I have not had the

> > opportunity to examine a Sphinx or GP DX D2 however. I have very

> > little experience using a go to mount other than toying with an ETX

> > 70 some years back. In light of this, I am approaching the thought

> > of the Gemini with hesitation and would consider forgoing the

> > computer and instead directing the funds towards the tripod meant

> > for the GM11 for increased stability. Would the tripod that is

> > provided with the GM8 be sufficient for the load requirements that

> I

> > have? Does the accessory tray increase rigidity? Are there other

> > ways to increase the integrity of the tripod? { my concern

> > regarding the tripod stems from a review on Anacortes, and the

> > reccomendation of a GM11 user.} I have only rudimentary computer

> > skills which may explain my trepidation regarding the Gemini

> system.

> > I currently locate objects by memory and only know the names of

> just

> > a few stars. {alignment difficulties?] Should I decide to proceed

> > with the GM8, are there certain accessories that are

> indispensable?

> > What would be the preferred power source for remote viewing sites?







Astrophotography: www.pbase.com/avoetsch12952

www.acclaimimages.com/search_terms/alan_voetsch.html



----------------------------

#30613 Aug 13, 2006

I cannot imagine a GM-8 wouldn't work great for your visual use. I

used to own one and also did some imaging with it. I had an TV 102

with an 80mm spotting scope on top. I was at the limits for

astrophotography but for visual it was not an issue. It may just

have been my skill however as a friend of mine does some very nice

guided astrophotography with his GM-8 and he has not made any

modifications except for regreasing. I agree with at least a G11 if

you plan on doing astrophotography. By the way I have Gemini and

found it very easy to work with. I have no experience with the

Vixen.



Jeff



--- In Losmandy_users@yahoogroups.com, Alan Voetsch

alanv12952@...> wrote: >

> I used a TV-85 on a GM-8 and it did fine, even for imaging. Other

than a reference to '12 > lbs', you don't say what the OTA is. I'm guessing a 4". Unless it

is a very long focal > length, the GM-8 will do fine for visual use. If you CAN afford

it, of course, a bigger, > stronger mount is always better. If you feel the need to use a

GOTO computer, then go > with the smaller mount and Gemini. If imaging is in your future, I

would do whatever it > takes to include Gemini in your purchase. And again, especially

for imaging, a bigger, > stronger mount is preferred.

>

> Remember this, it's an expensive hobby... 8-)

>

> Alan

>

> > --- In Losmandy_users@yahoogroups.com, "stars19.47deg"

> > stars19.47deg@> wrote:

> > > Greetings from the Big Island of Hawaii. I am a potential new

user > > > and would like to recieve some input which may allow me to

make the > > > proper purchase the first time around. I am relatively new to

this > > > nocturnal endeavor and have been enjoying it for the past 3

years. > > > I am looking for a mount for a 12lb. refractor which will

withstand > > > wind induced vibrations better than the 12lb. rated import

> > > equatorial mount on a very good wooden tripod using vibration

> > > suppression pads currently in use. This setup is adequate

for low > > > to mid power viewing and understandably does not permit

undisturbed > > > high power work. It is a non go to mount meant for visual

> > > observing. Unfortunately, resources are finite, and I have a

> > budget

> > > allowing either a GM8 with the Gemini, or perhaps the Vixen

> > Sphinx.

> > > I am leaning towards the Losmandy because I have seen the GM11

and > > > appreciate it's finish and solid appearance. I have not had

the > > > opportunity to examine a Sphinx or GP DX D2 however. I have

very > > > little experience using a go to mount other than toying with

an ETX > > > 70 some years back. In light of this, I am approaching the

thought > > > of the Gemini with hesitation and would consider forgoing the

> > > computer and instead directing the funds towards the tripod

meant > > > for the GM11 for increased stability. Would the tripod that

is > > > provided with the GM8 be sufficient for the load requirements

that > > I

> > > have? Does the accessory tray increase rigidity? Are there

other > > > ways to increase the integrity of the tripod? { my concern

> > > regarding the tripod stems from a review on Anacortes, and the

> > > reccomendation of a GM11 user.} I have only rudimentary

computer > > > skills which may explain my trepidation regarding the Gemini

> > system.

> > > I currently locate objects by memory and only know the names

of > > just

> > > a few stars. {alignment difficulties?] Should I decide to

proceed > > > with the GM8, are there certain accessories that are

> > indispensable?

> > > What would be the preferred power source for remote viewing

sites? >

>

>

> Astrophotography: www.pbase.com/avoetsch12952

> www.acclaimimages.com/search_terms/alan_voetsch.html

>







----------------------------

#36136 Jan 29, 2008

Does anyone have an unused Digital drive Board for the GM8 mount? It

will have a sticker on the back with an 8 on it. I

smoked mine a few nights ago. I made a mistake when connecting the

relay box

between the mount and my SBIG ST200XM camera. I connected the relay box

to itself and the camera directly to my mount. It only took a few

minutes of trying to get the mount running and many lights came on and

now neither motor will drive. I took the cover off nothing looks burnt

but I could smell a burnt smell. The mount is older so no warranty. I

will do some more testing later today but I think I need a new board.

It looks like they sell for about 75.00 on Astromart used but none were

available. I posted a want ad and I thought I would ask here also.



Rob



----------------------------

#36298 Feb 6 8:58 AM

Has anyone upgraded their Losmandy GM-8 mount to a GOTO Gemini and has

the old control box just sitting around?



Does anyone have an unused Digital drive Board for the GM8 mount? It

will have a sticker on the back with an 8 on it. I

smoked mine a few nights ago. I made a mistake when connecting the

relay box between the mount and my SBIG ST200XM camera. I connected the

relay box

to itself and the camera directly to my mount. It only took a few

minutes of trying to get the mount running and many lights came on and

now neither motor will drive. I took the cover off nothing looks burnt

but I could smell a burnt smell. The mount is older so no warranty.



Rob



----------------------------

#36312 Feb 6 3:56 PM

Dave,



Have you tried the drive system without the ST7 connected to see if you fryed the board?



Don

----- Original Message -----

From: "davidheld64" hhypernova@...>

To: Losmandy_users@yahoogroups.com>

Sent: Wednesday, February 06, 2008 6:41 PM

Subject: [Losmandy_users] Re: Looking for used drive board for a GM8 mount





> Hi Rob ,I did the same thing a few nights ago. I pluged my brand New

> G11 in to a ST7 and got a light show. In my defence the Manual says the

> hand box port is wired for all SBig autoguiders.

> I hope i did not do any damage. So when you say "Fryed"

> What is or is not working???

> Cheers Dave



----------------------------

#36315 Feb 6 4:06 PM

Hi Don, yes i think its ok I went though the speed setting and trak

rates OK But my hand box is back on its way to Losmandy, This has

been no picnic











y--- In Losmandy_users@yahoogroups.com, "Don D'Egidio"

djd521@...> wrote: >

> Dave,

>

> Have you tried the drive system without the ST7 connected to see if

you fryed the board? >

> Don

>

> ----- Original Message -----

> From: "davidheld64" hhypernova@...>

> To: Losmandy_users@yahoogroups.com>

> Sent: Wednesday, February 06, 2008 6:41 PM

> Subject: [Losmandy_users] Re: Looking for used drive board for a

GM8 mount >

>

> > Hi Rob ,I did the same thing a few nights ago. I pluged my brand

New > > G11 in to a ST7 and got a light show. In my defence the Manual

says the > > hand box port is wired for all SBig autoguiders.

> > I hope i did not do any damage. So when you say "Fryed"

> > What is or is not working???

> > Cheers Dave

>



----------------------------

#36339 Feb 7 10:26 AM

Hello folks

I recently purchased a NP127 and need to mount it up on a GM8 with

the older style foot plate. I already have a short dovetail plate but

it is too long to fit between the thumb screw knobs that hold the TV

bottom plate to the rings. Is anyone mounting their NP127 to a GM8 and

how are you doing it? Sometimes I use a TV Gibraltar mount and other

time the GM8 so I would prefer to be able to leave the TV bottom

plate attached if possible and just screw a Losmandy plate to it. Any

help would be appreciated.

Buck



----------------------------

#36342 Feb 7 2:58 PM

You might want a Losmandy plate. If it won't work with your

Gibraltar, if you have those rings that have holes on top you can have

one dovetail on each side. Maybe not elegant but saves time.



The thing is once you have gotten used to the g8 you're unlikely to

want to use the gibraltar. The gibraltars I know bounce quite a bit

and are not very useful; put in a heavy eyepiece and you instantly

have problems; take it out, and you have more problems.



The g8 will likely spoil you. It will probably make you consider more

expensive alternatives like the "disc mount" for the alt-az

configuration that you probably want for quick setups.



regards

greg n

--- In Losmandy_users@yahoogroups.com, "buck8one2" Buck8one2@...> wrote:

>

> Hello folks

> I recently purchased a NP127 and need to mount it up on a GM8 with

> the older style foot plate. I already have a short dovetail plate but

> it is too long to fit between the thumb screw knobs that hold the TV

> bottom plate to the rings. Is anyone mounting their NP127 to a GM8 and

> how are you doing it? Sometimes I use a TV Gibraltar mount and other

> time the GM8 so I would prefer to be able to leave the TV bottom

> plate attached if possible and just screw a Losmandy plate to it. Any

> help would be appreciated.

> Buck

>







----------------------------

#36343 Feb 7 6:23 PM

My older post style Gibraltar is pretty sturdy and have no

complaints. I only notice shakes when I get in high powers. I keep

the scope on the Gibraltar for the quick looks on the back patio and

I can haul it all out in one trip. I can't do that with the GM8. By

using the TV equilizer I have eliminated the need to rebalance with

eyepiece changes. UNLESS I use the 31T5 and then I have to rebalance.

I never thought of putting a plate in the top position, but then I'd

have to take off the finder.

Buck



--- In Losmandy_users@yahoogroups.com, "gnowellsct" tim71pos@...>

wrote: >

> You might want a Losmandy plate. If it won't work with your

> Gibraltar, if you have those rings that have holes on top you can

have > one dovetail on each side. Maybe not elegant but saves time.

>

> The thing is once you have gotten used to the g8 you're unlikely to

> want to use the gibraltar. The gibraltars I know bounce quite a bit

> and are not very useful; put in a heavy eyepiece and you instantly

> have problems; take it out, and you have more problems.

>

> The g8 will likely spoil you. It will probably make you consider

more > expensive alternatives like the "disc mount" for the alt-az

> configuration that you probably want for quick setups.

>

> regards

> greg n

>

> --- In Losmandy_users@yahoogroups.com, "buck8one2" Buck8one2@>

wrote: > >

> > Hello folks

> > I recently purchased a NP127 and need to mount it up on a GM8 with

> > the older style foot plate. I already have a short dovetail plate

but > > it is too long to fit between the thumb screw knobs that hold the

TV > > bottom plate to the rings. Is anyone mounting their NP127 to a

GM8 and > > how are you doing it? Sometimes I use a TV Gibraltar mount and

other > > time the GM8 so I would prefer to be able to leave the TV bottom

> > plate attached if possible and just screw a Losmandy plate to it.

Any > > help would be appreciated.

> > Buck

> >

>



----------------------------

#36361 Feb 8 3:34 PM

Hi Dave, The stepper motors will not run at all. All other functions

seem normal. The LED's respond to the buttons whne presses. The hand

controller LED no longer lights and no response with the steppers when

the hand controller buttons are pressed. I looked at the board

everything looks fine. The 5V regulator is putting out 4.88V all seems

ok but the stepper motors no longer work. Wnem I first get the mount

GM8 and ST200XM camera The did work ok together but would every now

and then act up So I got the sbig relay box and all was good. Then one

time I connected the st200xm camera to the mount again and new it no

longer works.



I talked to technical support and they said that it may be less

ezexpensive for me to get the board repaired. i'm going to send it in

Saturday morning to find out. They sell a new board for around 187 on

the losmandy web site.



Rob







--- In Losmandy_users@yahoogroups.com, "davidheld64" hhypernova@...>

wrote: >

> Hi Rob ,I did the same thing a few nights ago. I pluged my brand New

> G11 in to a ST7 and got a light show. In my defence the Manual says

the > hand box port is wired for all SBig autoguiders.

> I hope i did not do any damage. So when you say "Fryed"

> What is or is not working???

> Cheers Dave

>



----------------------------

#36362 Feb 8 3:38 PM

Dave one of the main chips sells on ebay item 140018907843 (80C32 /

SAB80C32 / SAB80C32-16-P / Siemens)for about 20.00 delivered but I'm

not sure if it is bad and I'm not sure if you have to program the rom

internal to it for the mount.



ROb





--- In Losmandy_users@yahoogroups.com, "davidheld64" hhypernova@...>

wrote: >

> Hi Rob ,I did the same thing a few nights ago. I pluged my brand New

> G11 in to a ST7 and got a light show. In my defence the Manual says

the > hand box port is wired for all SBig autoguiders.

> I hope i did not do any damage. So when you say "Fryed"

> What is or is not working???

> Cheers Dave

>



----------------------------

#42522 Apr 15, 2009

hello,group.

............. bob henry here.quick question:after correctly polar aligning my gm8,put my coronado telescope on the mount pointing south,which side of the mount should the scope be on(east or west side of mount with scope facing south) to track best?before noon and afternoon,does it make a difference?

..................................................... thanks ,

..................................................... bob









[Non-text portions of this message have been removed]



----------------------------

#42526 Apr 16, 2009

--- In Losmandy_users@yahoogroups.com, robert hey solarscoperob@...> wrote: >

> hello,group.

> ............. bob henry here.quick question:after correctly polar aligning my gm8,put my coronado telescope on the mount pointing south,which side of the mount should the scope be on(east or west side of mount with scope facing south) to track best?before noon and afternoon,does it make a difference?

> ..................................................... thanks ,

> ..................................................... bob

>

>

>

>

> [Non-text portions of this message have been removed]

>

Bob



It dosn't make any difference, but I always but the scope on the "high side" for comfort and easy access to the sol finder.



(West before noon - East afternoon).



Best wishes, Dave







----------------------------

#42527 Apr 16, 2009

hi,dave!

........ thanks for the info!

................................... bob

--- On Thu, 4/16/09, davea11en2001 davea11en@...> wrote:



From: davea11en2001 davea11en@...>

Subject: [Losmandy_users] Re: observing sun on gm8 mount

To: Losmandy_users@yahoogroups.com

Date: Thursday, April 16, 2009, 7:06 AM

















--- In Losmandy_users@ yahoogroups. com, robert hey solarscoperob@ ...> wrote:

>

> hello,group.

> ............. bob henry here.quick question:after correctly polar aligning my gm8,put my coronado telescope on the mount pointing south,which side of the mount should the scope be on(east or west side of mount with scope facing south) to track best?before noon and afternoon,does it make a difference?

> ..................................................... thanks ,

> ..................................................... bob

>

>

>

>

> [Non-text portions of this message have been removed]

>

Bob



It dosn't make any difference, but I always but the scope on the "high side" for comfort and easy access to the sol finder.



(West before noon - East afternoon).



Best wishes, Dave







































[Non-text portions of this message have been removed]



----------------------------

#42528 Apr 17, 2009

hi,group!

........... is there or is there not a north or south mark on the gm8 mount o

r tripod to more accurately polar align scope,and if so,where? i was told there MIGHT be marked on tripod or mount n or s.

....................................................................................... thanks,

....................................................................................... bob









[Non-text portions of this message have been removed]



----------------------------

#42530 Apr 17, 2009

robert hey wrote: > is there or is there not a north or south mark on the gm8

> mount or tripod to more accurately polar align scope,and if

> so,where? i was told there MIGHT be marked on tripod or mount n or s.



There is no mark on my GM-8. No such mark is needed for polar

alignment. The polar axis itself is your reference.



Bud



----------------------------

#42531 Apr 17, 2009

hey,bud!

............. thanks for your info!

......................................... bob

--- On Fri, 4/17/09, William Hamblen wrhamblen@...> wrote:



From: William Hamblen wrhamblen@...>

Subject: Re: [Losmandy_users] north marking on gm8 mount

To: Losmandy_users@yahoogroups.com

Date: Friday, April 17, 2009, 9:55 AM

















robert hey wrote:

> is there or is there not a north or south mark on the gm8

> mount or tripod to more accurately polar align scope,and if

> so,where? i was told there MIGHT be marked on tripod or mount n or s.



There is no mark on my GM-8. No such mark is needed for polar

alignment. The polar axis itself is your reference.



Bud







































[Non-text portions of this message have been removed]



----------------------------

#51474 Aug 17, 2012

Paul,



You should expect a nicely finished and durable mount that has plenty of life ahead of it.



I have a G11 with stepper motors and cannot see any vibration at any magnification.



Regards



Paul Homer On 17/08/2012, at 10:50 AM, paul78703 wrote:



> I just ordered my first Losmandy mount, a GM8. What kind of fit and finish should I expect? Should I expect near perfection or something quite a bit less, or what?

>

> Oh, and another thing: since the non-Gemini mount I ordered has stepper motors (right?), should I expect to see, through the eyepiece, a bit of vibration or blurring at high magnification?

>

> Thanks.

>

> Paul

>

>







[Non-text portions of this message have been removed]



----------------------------

#54463 Jul 20, 2014

Does anyone know the exact weight of the current GM8 mount head onlu (MINUS counterweight shaft)?Some vendors list it as 21 lbs, others 17?���� I have a friend who is trying to minimize the weight she can lift as far as the heaviest component of a mount.



Thanks,RenatoBenicia, CA



----------------------------

#54467 Jul 20, 2014

I just weighed mine and it is 21 poundswithout the counterweight shaft.



Bud

On 07/20/2014 12:11 PM, ram_ses2@... [Losmandy_users] wrote:



Does anyone know the exact weight of the current GM8mount head onlu (MINUS counterweight shaft)?Some vendors list it as 21 lbs, others 17?.. I have afriend who is trying to minimize the weight she can lift asfar as the heaviest component of a mount.





Thanks,RenatoBenicia, CA







----------------------------

#54472 Jul 20, 2014

The Losmandy website states the GM-8 head weighs 21 lbs.

Bill



On Sunday, July 20, 2014 7:03 PM, "William Hamblen wrhamblen@... [Losmandy_users]" Losmandy_users@yahoogroups.com> wrote:

��I just weighed mine and it is 21 poundswithout the counterweight shaft.



Bud

On 07/20/2014 12:11 PM, ram_ses2@... [Losmandy_users] wrote:



Does anyone know the exact weight of the current GM8mount head onlu (MINUS counterweight shaft)?Some vendors list it as 21 lbs, others 17?���� I have afriend who is trying to minimize the weight she can lift asfar as the heaviest component of a mount.





Thanks,RenatoBenicia, CA



----------------------------

#56955 Feb 28 1:49 PM

Hi,



I am new to the losmandy_user group. I tried to search using

skyinsight.net's

Archive Quick Search but it doesn't work.



I installed a OPW-8W into the RA of my non-GOTO GM8

It has a noticeable play after I installed.

I can't quantify the play but I can feel it when I rotate the RA back

and forth; maybe a 5th of a division on the RA setting circle.



Should there be this much play?



Thanks



----------------------------

#56956 Feb 28 7:47 PM

Is the play showing as the worm moving back and forth, or as the play between the worm and the worm

wheel? One way to check for proper gear mesh is to measure at the end of the counterweight shaft for

1 - 2 mm movement.



Don

----- Original Message -----

From: "erik schwendeman ejs758@... [Losmandy_users]" Losmandy_users@yahoogroups.com>

To: losmandy_users@yahoogroups.com>

Sent: Sunday, February 28, 2016 4:49 PM

Subject: [Losmandy_users] OPW for GM8 Mount





> Hi,

>

> I am new to the losmandy_user group. I tried to search using

> skyinsight.net's

> Archive Quick Search but it doesn't work.

>

> I installed a OPW-8W into the RA of my non-GOTO GM8

> It has a noticeable play after I installed.

> I can't quantify the play but I can feel it when I rotate the RA back

> and forth; maybe a 5th of a division on the RA setting circle.

>

> Should there be this much play?

>

> Thanks

>

>

>

>

>

>

>

>

>

---------------

> Posted by: erik schwendeman ejs758@...>

---------------

>

>

---------------

>

> Yahoo Groups Links

>

>

>



----------------------------

#56957 Feb 29 5:56 AM

Don,



Thank you for your reply.



The play is between the worm and the RA wheel gear

I measure around 4 mm movement at the end of the counterweightshaft.

The OPW is push up against the gear as much as possible with thelittle thumb screw.



The mount is a 2000 year model and it had the steel worm.



I ran the mount with the OPW a couple nights ago. I use PHD2 withthe Orion SSAG on a 300 mm f.l. Stellarvue guide scope with aStellarvue 102ED. The RA rms was 1- 1.8 arc seconds with some timebelow 1 arcsecond but I still saw some > 2 arxseconddepartures.



Erik

.Is the play showing as the worm moving back and forth, oras the play between the worm and the worm

wheel? One way to check for proper gear mesh is to measureat the end of the counterweight shaft for

1 - 2 mm movement.



Don



----- Original Message -----

From: "erik schwendeman ejs758@...[Losmandy_users]" Losmandy_users@yahoogroups.com>

To: losmandy_users@yahoogroups.com>

Sent: Sunday, February 28, 2016 4:49 PM

Subject: [Losmandy_users] OPW for GM8 Mount



> Hi,

>

> I am new to the losmandy_user group. I tried tosearch using

> skyinsight.net's

> Archive Quick Search but it doesn't work.

>

> I installed a OPW-8W into the RA of my non-GOTO GM8

> It has a noticeable play after I installed.

> I can't quantify the play but I can feel it when Irotate the RA back

> and forth; maybe a 5th of a division on the RAsetting circle.

>

> Should there be this much play?

>

> Thanks

>

>

>

>

>

>

>

>

>

---------------

> Posted by: erik schwendeman ejs758@...>

---------------

>

>

---------------

>

> Yahoo Groups Links

>

>

>



----------------------------

#56958 Feb 29 6:53 AM

By OPW, are we talking about the Ovision worm?

If so, I received and installed one on my GM-8 this past weekend. ��I also noticed quite a bit of play after installation. ��I loosened it up and then maintained pressure on it up against the RA gear while tightening the two bolts underneath. ��The "excessive" play disappeared and now the end of the C-weight shaft only wiggles back and forth a tiny bit (about 1-2 mm).

One thing I ended up doing is removing the motor as well as the Dec head. ��That removed a lot of weight from the assembly and opened up the working room.

Phil



----------------------------

#56961 Feb 29 9:00 AM

Hi Erik,Your phrase:"

The OPW is push up against the gear as much as possible with the little thumb screw.... "......makes me wonder if perhaps you are moving the thumbscrew in the wrong direction...Just be clear, on the Losmandy OPW unit, you must unscrew (back out) the little thumbscrew to move the worm gear tighter against the "ring gear.". Tightening (in) the thumbscrew pushes the worm gear away from the ring gear..Once you back out the thumbscrew, you must:

1. Back out the thumbscrews so it's front end does not extend from the (hidden) back of the OPW.

2. Slightly loosen the bolt nearest the RA motor, so the OPW can rotate with that bolt as the axis. (Call that bolt #1)

3. Loosen the other OPW bolt, which has a slot hole. (Call that bolt #2)

4.. Push the worm gear against the ring gear tight.

5.. Tighten, but not too hard, bolt #1.

6. While still pushing the worm gear against the ring gear, tighten, but not too hard, bolt #2.

7. Measure your side to side movement of the end of the counterweight bar.. It should be nearly zero movement.8. If it is not near zero movement, then your worm gear is sliding side to side along the worm axis.. That is caused by a slight gap in the machining of the OPW.. A small spring washer, also called a Belleville washer, and made for the "R4" sized worm bearing, should be purchased (or contact me and I'll send you one) and installed at one of the bearings nearest the worm threads, to eliminate that movement.9. If the counterweight bar movement is now zero, with the worm gear pushing on the RA ring gear..... now start to turn the thumbscrew in toward the ring gear. This will loosen the worm gear spacing to the ring gear.. You do this until your counterweight bar can move about 1 to 2 mm side to side..

10. Now tighten down your bolts #1 and #2..

11. Power on the RA axis motor and run the RA all the way around 360 degrees.. You should have smooth movement, with no binding..

12. (Optional...) Using a guide camera,. record your PE with a program like PhD2, and use the log file with a program like PECPREP (see the EQMOD website ) to determine your PE.. That program also has a selection for the G11 (probably the G8) mount.. That will tell you what element of the RA drive gears and bearings is contributing to the PE.13. With an OPW, on the G11, people are measuring about 1 to 2 arcsec RMS.. PEC on the Gemini controller can get you below that...so you are really just limited by "seeing" fluctuations in the air.

My PDF writeup on installing a Belleville washer into the OPW is on a tab at website

Www.michaelherman.netHave fun and success....Michael

.By OPW, are we talking about the Ovision worm?

If so, I received and installed one on my GM-8 this past weekend.. I also noticed quite a bit of play after installation.. I loosened it up and then maintained pressure on it up against the RA gear while tightening the two bolts underneath.. The "excessive" play disappeared and now the end of the C-weight shaft only wiggles back and forth a tiny bit (about 1-2 mm).

One thing I ended up doing is removing the motor as well as the Dec head.. That removed a lot of weight from the assembly and opened up the working room.

Phil







----------------------------

#56962 Feb 29 9:53 AM

Michael,



Thanks Michael and Don for the reminder about the thumbscrew.

I ran the stepper motor before I received Michael's e-mail.Stopped motor.



I followed steps 1 through 7 ; now zero movement.

(Moving the worm 10 minutes or so meshed the worm to the ringgear?)



Followed step 9.



Will try to run PE using PECPREC tonight.



Thanks again.



Erik







.Hi Erik,Your phrase:"

The OPW is push up against the gear as much as possiblewith the little thumb screw.... "......makes me wonder if perhaps you are movingthe thumbscrew in the wrong direction...Just be clear, on the Losmandy OPW unit, youmust unscrew (back out) the little thumbscrew to move theworm gear tighter against the "ring gear.". Tightening(in) the thumbscrew pushes the worm gear away from thering gear..Once you back out the thumbscrew, you must:

1. Back out the thumbscrews so it's front end does notextend from the (hidden) back of the OPW.

2. Slightly loosen the bolt nearest the RA motor, so theOPW can rotate with that bolt as the axis. (Call that bolt#1)

3. Loosen the other OPW bolt, which has a slot hole. (Callthat bolt #2)

4.. Push the worm gear against the ring gear tight.

5.. Tighten, but not too hard, bolt #1.

6. While still pushing the worm gear against the ringgear, tighten, but not too hard, bolt #2.

7. Measure your side to side movement of the end of thecounterweight bar.. It should be nearly zero movement.8. If it is not near zero movement, then yourworm gear is sliding side to side along the worm axis..That is caused by a slight gap in the machining of theOPW.. A small spring washer, also called a Bellevillewasher, and made for the "R4" sized worm bearing, shouldbe purchased (or contact me and I'll send you one) andinstalled at one of the bearings nearest the worm threads,to eliminate that movement.9. If the counterweight bar movement is nowzero, with the worm gear pushing on the RA ring gear.....now start to turn the thumbscrew in toward the ring gear.This will loosen the worm gear spacing to the ring gear..You do this until your counterweight bar can move about 1to 2 mm side to side..

10. Now tighten down your bolts #1 and #2..

11. Power on the RA axis motor and run the RA all the wayaround 360 degrees.. You should have smooth movement, withno binding..

12. (Optional...) Using a guide camera,. record your PEwith a program like PhD2, and use the log file with aprogram like PECPREP (see the EQMOD website ) to determineyour PE.. That program also has a selection for the G11(probably the G8) mount.. That will tell you what elementof the RA drive gears and bearings is contributing to thePE.13. With an OPW, on the G11, people aremeasuring about 1 to 2 arcsec RMS.. PEC on the Geminicontroller can get you below that...so you are really justlimited by "seeing" fluctuations in the air.

My PDF writeup on installing a Bellevillewasher into the OPW is on a tab at website

Www.michaelherman.netHave fun and success....Michael

.By OPW, are we talking about the Ovision worm?

If so, I received and installed one on myGM-8 this past weekend.. I also noticed quite abit of play after installation.. I loosened itup and then maintained pressure on it up againstthe RA gear while tightening the two boltsunderneath.. The "excessive" play disappearedand now the end of the C-weight shaft onlywiggles back and forth a tiny bit (about 1-2mm).

One thing I ended up doing is removing themotor as well as the Dec head.. That removed alot of weight from the assembly and opened upthe working room.

Phil



----------------------------

#56963 Feb 29 10:40 AM

You are well on your way. ...!We have a great world-wide group... It's a pleasure to help others as we also got great help when we needed it.Have fun,

MichaelOn Feb 29, 2016 9:53 AM, "erik schwendeman ejs758@... [Losmandy_users]" Losmandy_users@yahoogroups.com> wrote:

.Michael,



Thanks Michael and Don for the reminder about the thumbscrew.

I ran the stepper motor before I received Michael's e-mail.Stopped motor.



I followed steps 1 through 7 ; now zero movement.

(Moving the worm 10 minutes or so meshed the worm to the ringgear?)



Followed step 9.



Will try to run PE using PECPREC tonight.



Thanks again.



Erik







.Hi Erik,Your phrase:"

The OPW is push up against the gear as much as possiblewith the little thumb screw.... "......makes me wonder if perhaps you are movingthe thumbscrew in the wrong direction...Just be clear, on the Losmandy OPW unit, youmust unscrew (back out) the little thumbscrew to move theworm gear tighter against the "ring gear.". Tightening(in) the thumbscrew pushes the worm gear away from thering gear..Once you back out the thumbscrew, you must:

1. Back out the thumbscrews so it's front end does notextend from the (hidden) back of the OPW.

2. Slightly loosen the bolt nearest the RA motor, so theOPW can rotate with that bolt as the axis. (Call that bolt#1)

3. Loosen the other OPW bolt, which has a slot hole. (Callthat bolt #2)

4.. Push the worm gear against the ring gear tight.

5.. Tighten, but not too hard, bolt #1.

6. While still pushing the worm gear against the ringgear, tighten, but not too hard, bolt #2.

7. Measure your side to side movement of the end of thecounterweight bar.. It should be nearly zero movement.8. If it is not near zero movement, then yourworm gear is sliding side to side along the worm axis..That is caused by a slight gap in the machining of theOPW.. A small spring washer, also called a Bellevillewasher, and made for the "R4" sized worm bearing, shouldbe purchased (or contact me and I'll send you one) andinstalled at one of the bearings nearest the worm threads,to eliminate that movement.9. If the counterweight bar movement is nowzero, with the worm gear pushing on the RA ring gear.....now start to turn the thumbscrew in toward the ring gear.This will loosen the worm gear spacing to the ring gear..You do this until your counterweight bar can move about 1to 2 mm side to side..

10. Now tighten down your bolts #1 and #2..

11. Power on the RA axis motor and run the RA all the wayaround 360 degrees.. You should have smooth movement, withno binding..

12. (Optional...) Using a guide camera,. record your PEwith a program like PhD2, and use the log file with aprogram like PECPREP (see the EQMOD website ) to determineyour PE.. That program also has a selection for the G11(probably the G8) mount.. That will tell you what elementof the RA drive gears and bearings is contributing to thePE.13. With an OPW, on the G11, people aremeasuring about 1 to 2 arcsec RMS.. PEC on the Geminicontroller can get you below that...so you are really justlimited by "seeing" fluctuations in the air.

My PDF writeup on installing a Bellevillewasher into the OPW is on a tab at website

Www.michaelherman.netHave fun and success....Michael

.By OPW, are we talking about the Ovision worm?

If so, I received and installed one on myGM-8 this past weekend.. I also noticed quite abit of play after installation.. I loosened itup and then maintained pressure on it up againstthe RA gear while tightening the two boltsunderneath.. The "excessive" play disappearedand now the end of the C-weight shaft onlywiggles back and forth a tiny bit (about 1-2mm).

One thing I ended up doing is removing themotor as well as the Dec head.. That removed alot of weight from the assembly and opened upthe working room.

Phil







----------------------------

#56985 Mar 4, 2016

Hi,

I ran a PE on my GM8 mount and used PECprep to analyze PE.

I have a non-GOTO GM8 (circa 2000) with Hurst stepper motors and a OPW-8W

Does anyone have data on GM8 gear periods (other than worm gear)?

Thanks



----------------------------

#56989 Mar 4, 2016

Hi,

> I ran a PE on my GM8 mount and used PECprep to analyze PE.



I don't know about your GM8 question, but if you want a more modern (free) periodic analysis program then please try the PEMPro Log Viewer application I wrote. It can read PHD2, PEMPro, and simply X/Y logs. The video at the link shows the features of this new tool (more features to come). Again, it's absolutely free.



ccdware.infopop.cc/eve/forums/a/tpc/f/401101098/m/3217021086



-Ray Gralak

Author of APCC (Astro-Physics Command Center): www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc

Author of PEMPro: www.ccdware.com

Author of Astro-Physics V2 ASCOM Driver: www.gralak.com/apdriver

Author of PulseGuide: www.pulseguide.com

Author of Sigma: www.gralak.com/sigma

> -----Original Message-----

> From: Losmandy_users@yahoogroups.com

> [mailto:Losmandy_users@yahoogroups.com]

> Sent: Friday, March 4, 2016 7:51 AM

> To: Losmandy_users@yahoogroups.com

> Subject: [Losmandy_users] PECprep anlysis of GM8 Mount

>

>

>

> Hi,

>

> I ran a PE on my GM8 mount and used PECprep to analyze PE.

>

> I have a non-GOTO GM8 (circa 2000) with Hurst stepper motors and a OPW-8W

>

> Does anyone have data on GM8 gear periods (other than worm gear)?

>

> Thanks

>

>

>

>

>

>



----------------------------

#56990 Mar 4, 2016

Thanks Ray, that is very much appreciated.��



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