Re: 600EGTO with Sky 90 & FSQ-106


Nov 20, 2001

 


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

#4011 Nov 20, 2001

I would like to put my Sky 90 and FSQ-106 side by side on my

AP600EGTO. I will use the sky 90 to guide.



Would anyone know if this would fall within the mount capacity?



Andrew



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

#4012 Nov 20, 2001

Hi Andrew,



I use my Stowaway and 80mm F/11 guidescope side by

side on my 600e and it works great! Just one note,

mounting side by side may lead to some flexure on the

plate if the equipment is on the heavy side. I use a

modified DAP13 plate mounted on a DoveLM. I attached

the smaller AP dovetail plate for the short sliding

bars used on the Stowaway on one side of the DAP13,

and I have the AP 15" sliding bar mounted to the

guidescope which is thru-bolted on the other side. I

use the 15" sliding bar because I also use it with my

155EDF on 1200 mount, this allows easy swap out.



Just to let you know, I borrowed my friends new 150

TEC Mak Cass (Great Scope, love it!), and I did some

CCD'ing with it. My above setup handled it great with

the guidescope; I got excellent tracking results at

0.701 arcsec/pixel!



hope this may help you out,



Tim



--- andrewj@... wrote: > I would like to put my Sky 90 and FSQ-106 side by

> side on my

> AP600EGTO. I will use the sky 90 to guide.

>

> Would anyone know if this would fall within the

> mount capacity?

>

> Andrew

>

>

>

> To UNSUBSCRIBE, or for general information on the

> ap-gto list

> see groups.yahoo.com/group/ap-gto

>

> Your use of Yahoo! Groups is subject to

> docs.yahoo.com/info/terms/

>

>





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

#4013 Nov 20, 2001

Tim,



Thanks for the reply and description. It helps a bit, but I think my

set up is more like using the 4 inch Ap with the Stowaway as a guide

a scope. Total over kill but would save me buying a guide scope if it

worked as I already have these scope on hand.



Thanks again



Andrew

--- In ap-gto@y..., Tim Khan timkhan@y...> wrote:

> Hi Andrew,

>

> I use my Stowaway and 80mm F/11 guidescope side by

> side on my 600e and it works great! Just one note,

> mounting side by side may lead to some flexure on the

> plate if the equipment is on the heavy side. I use a

> modified DAP13 plate mounted on a DoveLM. I attached

> the smaller AP dovetail plate for the short sliding

> bars used on the Stowaway on one side of the DAP13,

> and I have the AP 15" sliding bar mounted to the

> guidescope which is thru-bolted on the other side. I

> use the 15" sliding bar because I also use it with my

> 155EDF on 1200 mount, this allows easy swap out.

>

> Just to let you know, I borrowed my friends new 150

> TEC Mak Cass (Great Scope, love it!), and I did some

> CCD'ing with it. My above setup handled it great with

> the guidescope; I got excellent tracking results at

> 0.701 arcsec/pixel!

>

> hope this may help you out,

>

> Tim

>

> --- andrewj@n... wrote:

> > I would like to put my Sky 90 and FSQ-106 side by

> > side on my

> > AP600EGTO. I will use the sky 90 to guide.

> >

> > Would anyone know if this would fall within the

> > mount capacity?

> >

> > Andrew

> >

> >

> >

> > To UNSUBSCRIBE, or for general information on the

> > ap-gto list

> > see groups.yahoo.com/group/ap-gto

> >

> > Your use of Yahoo! Groups is subject to

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

> >

> >

>

>

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

> Do You Yahoo!?

> Yahoo! GeoCities - quick and easy web site hosting, just

$8.95/month.

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

#4017 Nov 20, 2001

Hi, Tim,



I have a similar problem with mounting a Sky90 and an FS152 on an

AP900GTO. I can almost understand how you are working it, but if you

could post a photo, that would really help.



Thanks,



Chuck

--- In ap-gto@y..., Tim Khan timkhan@y...> wrote:

> Hi Andrew,

>

> I use my Stowaway and 80mm F/11 guidescope side by

> side on my 600e and it works great! Just one note,

> mounting side by side may lead to some flexure on the

> plate if the equipment is on the heavy side. I use a

> modified DAP13 plate mounted on a DoveLM. I attached

> the smaller AP dovetail plate for the short sliding

> bars used on the Stowaway on one side of the DAP13,

> and I have the AP 15" sliding bar mounted to the

> guidescope which is thru-bolted on the other side. I

> use the 15" sliding bar because I also use it with my

> 155EDF on 1200 mount, this allows easy swap out.

>

> Just to let you know, I borrowed my friends new 150

> TEC Mak Cass (Great Scope, love it!), and I did some

> CCD'ing with it. My above setup handled it great with

> the guidescope; I got excellent tracking results at

> 0.701 arcsec/pixel!

>

> hope this may help you out,

>

> Tim

>

> --- andrewj@n... wrote:

> > I would like to put my Sky 90 and FSQ-106 side by

> > side on my

> > AP600EGTO. I will use the sky 90 to guide.

> >

> > Would anyone know if this would fall within the

> > mount capacity?

> >

> > Andrew

> >

> >

> >

> > To UNSUBSCRIBE, or for general information on the

> > ap-gto list

> > see groups.yahoo.com/group/ap-gto

> >

> > Your use of Yahoo! Groups is subject to

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

> >

> >

>

>

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

> Do You Yahoo!?

> Yahoo! GeoCities - quick and easy web site hosting, just

$8.95/month.

> geocities.yahoo.com/ps/info1







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

#4018 Nov 20, 2001

Hello Andrew,



By talking with our mount person and taking into account that the

Sky 90 weighs 7 lbs and the FS 102 weighs 11 Lbs you should be well

within the load of the 600EGTO. You will need a side by side plate

for this setup and the closer you place the telescopes together the

better. Losmandy offers a side by side system if you are not in the

position to fabricate your own. I haven't tried this setup personally

but the 600EGTO should hold both telescopes and about 5-6 Lbs of

rings and equipment without too many problems. You will need to make

sure this setup is also properly counter weighted as well.



Good Luck,

Luke Kilpatrick

Customer Service, Astro-Physics

--- In ap-gto@y..., andrewj@n... wrote:

> Tim,

>

> Thanks for the reply and description. It helps a bit, but I think

my

> set up is more like using the 4 inch Ap with the Stowaway as a

guide

> a scope. Total over kill but would save me buying a guide scope if

it

> worked as I already have these scope on hand.

>

> Thanks again

>

> Andrew

>

> --- In ap-gto@y..., Tim Khan timkhan@y...> wrote:

> > Hi Andrew,

> >

> > I use my Stowaway and 80mm F/11 guidescope side by

> > side on my 600e and it works great! Just one note,

> > mounting side by side may lead to some flexure on the

> > plate if the equipment is on the heavy side. I use a

> > modified DAP13 plate mounted on a DoveLM. I attached

> > the smaller AP dovetail plate for the short sliding

> > bars used on the Stowaway on one side of the DAP13,

> > and I have the AP 15" sliding bar mounted to the

> > guidescope which is thru-bolted on the other side. I

> > use the 15" sliding bar because I also use it with my

> > 155EDF on 1200 mount, this allows easy swap out.

> >

> > Just to let you know, I borrowed my friends new 150

> > TEC Mak Cass (Great Scope, love it!), and I did some

> > CCD'ing with it. My above setup handled it great with

> > the guidescope; I got excellent tracking results at

> > 0.701 arcsec/pixel!

> >

> > hope this may help you out,

> >

> > Tim

> >

> > --- andrewj@n... wrote:

> > > I would like to put my Sky 90 and FSQ-106 side by

> > > side on my

> > > AP600EGTO. I will use the sky 90 to guide.

> > >

> > > Would anyone know if this would fall within the

> > > mount capacity?

> > >

> > > Andrew

> > >

> > >

> > >

> > > To UNSUBSCRIBE, or for general information on the

> > > ap-gto list

> > > see groups.yahoo.com/group/ap-gto

> > >

> > > Your use of Yahoo! Groups is subject to

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

> > >

> > >

> >

> >

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

> > Do You Yahoo!?

> > Yahoo! GeoCities - quick and easy web site hosting, just

> $8.95/month.

> > geocities.yahoo.com/ps/info1



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

#4019 Nov 20, 2001

Hi Chuck,



An FS-152, would be over the weight limit of the

losmandy DAP13 dovetail. The best way is to mount it

directly over scope, so you dont have balance problem.

I do this with my Stowaway and 155 EDF. The losmandy

side by side plate is still not enough for your

application unless you are strictly doing short CCD

exposures. My friend has the Side by side plate, and

it does flex when doing long exposure astrophotgraphy.



Anyways, I'll take a photo of it tonight and post it.



Cheers,



Tim



--- chuck_olson@... wrote: > Hi, Tim,

>

> I have a similar problem with mounting a Sky90 and

> an FS152 on an

> AP900GTO. I can almost understand how you are

> working it, but if you

> could post a photo, that would really help.

>

> Thanks,

>

> Chuck

>

> --- In ap-gto@y..., Tim Khan timkhan@y...> wrote:

> > Hi Andrew,

> >

> > I use my Stowaway and 80mm F/11 guidescope side by

> > side on my 600e and it works great! Just one note,

> > mounting side by side may lead to some flexure on

> the

> > plate if the equipment is on the heavy side. I use

> a

> > modified DAP13 plate mounted on a DoveLM. I

> attached

> > the smaller AP dovetail plate for the short

> sliding

> > bars used on the Stowaway on one side of the

> DAP13,

> > and I have the AP 15" sliding bar mounted to the

> > guidescope which is thru-bolted on the other side.

> I

> > use the 15" sliding bar because I also use it with

> my

> > 155EDF on 1200 mount, this allows easy swap out.

> >

> > Just to let you know, I borrowed my friends new

> 150

> > TEC Mak Cass (Great Scope, love it!), and I did

> some

> > CCD'ing with it. My above setup handled it great

> with

> > the guidescope; I got excellent tracking results

> at

> > 0.701 arcsec/pixel!

> >

> > hope this may help you out,

> >

> > Tim

> >

> > --- andrewj@n... wrote:

> > > I would like to put my Sky 90 and FSQ-106 side

> by

> > > side on my

> > > AP600EGTO. I will use the sky 90 to guide.

> > >

> > > Would anyone know if this would fall within the

> > > mount capacity?

> > >

> > > Andrew

> > >

> > >

> > >

> > > To UNSUBSCRIBE, or for general information on

> the

> > > ap-gto list

> > > see groups.yahoo.com/group/ap-gto

> > >

> > > Your use of Yahoo! Groups is subject to

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

> > >

> > >

> >

> >

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

> > Do You Yahoo!?

> > Yahoo! GeoCities - quick and easy web site

> hosting, just

> $8.95/month.

> > geocities.yahoo.com/ps/info1

>

>

>

> To UNSUBSCRIBE, or for general information on the

> ap-gto list

> see groups.yahoo.com/group/ap-gto

>

> Your use of Yahoo! Groups is subject to

> docs.yahoo.com/info/terms/

>

>





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

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

#4030 Nov 21, 2001

Luke,



Thanks for the info. Just to check, I beleive my FSQ-106 is closer to

15 pounds, a bit heavier than the FS 102. Would that still be

acceptable?



Andrew

--- In ap-gto@y..., killshot__@h... wrote:

> Hello Andrew,

>

> By talking with our mount person and taking into account that the

> Sky 90 weighs 7 lbs and the FS 102 weighs 11 Lbs you should be well

> within the load of the 600EGTO. You will need a side by side plate

> for this setup and the closer you place the telescopes together the

> better. Losmandy offers a side by side system if you are not in the

> position to fabricate your own. I haven't tried this setup

personally

> but the 600EGTO should hold both telescopes and about 5-6 Lbs of

> rings and equipment without too many problems. You will need to

make

> sure this setup is also properly counter weighted as well.

>

> Good Luck,

> Luke Kilpatrick

> Customer Service, Astro-Physics

>



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

#4032 Nov 21, 2001

Hi Andrew,



The problem with flat plates, such as the Losmandy's

double saddle plate, is that they are horrible for

resisting torsion. I did some quick calcs and found

that angle of twist is in the range of 40-60 arcsecs

when pointing to the zenith (using 15 lbs + 3 lbs

add'l load, 3.5" to CG). However, if the weight is

equal on both sides (as may be in your case) then the

angle of twist is equal, provided that the saddle

plate is attached to the center of the mount (really

to the DoveLM). My plate conversion using the DAP13 is

far worse, but I dont take long CCD exposures. It

becomes apparent when stacking the images, my images

drift in east-west directions and is worst at the

zenith.



Anyways, give it a try, it'll probably work out fine

in your case on the 600e. One more note: the DoveLM

hangs out more on one side than the other, which gives

one more degree of adjustment to equalize twist if the

weight is somewhat unequal.



Tim



--- andrewj@... wrote: > Luke,

>

> Thanks for the info. Just to check, I beleive my

> FSQ-106 is closer to

> 15 pounds, a bit heavier than the FS 102. Would that

> still be

> acceptable?

>

> Andrew

>

> --- In ap-gto@y..., killshot__@h... wrote:

> > Hello Andrew,

> >

> > By talking with our mount person and taking into

> account that the

> > Sky 90 weighs 7 lbs and the FS 102 weighs 11 Lbs

> you should be well

> > within the load of the 600EGTO. You will need a

> side by side plate

> > for this setup and the closer you place the

> telescopes together the

> > better. Losmandy offers a side by side system if

> you are not in the

> > position to fabricate your own. I haven't tried

> this setup

> personally

> > but the 600EGTO should hold both telescopes and

> about 5-6 Lbs of

> > rings and equipment without too many problems. You

> will need to

> make

> > sure this setup is also properly counter weighted

> as well.

> >

> > Good Luck,

> > Luke Kilpatrick

> > Customer Service, Astro-Physics

> >

>

>

>

>

> To UNSUBSCRIBE, or for general information on the

> ap-gto list

> see groups.yahoo.com/group/ap-gto

>

> Your use of Yahoo! Groups is subject to

> docs.yahoo.com/info/terms/

>

>





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

Do You Yahoo!?

Yahoo! GeoCities - quick and easy web site hosting, just $8.95/month.

geocities.yahoo.com/ps/info1



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

#4033 Nov 21, 2001

Tim,



For now I was going to try and mount the scopes with my Takahashi

mounting plate, Tak tube rings etc. If it works I will post it. If

not I will try your suggestion and let you know.



Thanks for the advice and help.



Andrew

--- In ap-gto@y..., Tim Khan timkhan@y...> wrote:

> Hi Andrew,

>

> The problem with flat plates, such as the Losmandy's

> double saddle plate, is that they are horrible for

> resisting torsion. I did some quick calcs and found

> that angle of twist is in the range of 40-60 arcsecs

> when pointing to the zenith (using 15 lbs + 3 lbs

> add'l load, 3.5" to CG). However, if the weight is

> equal on both sides (as may be in your case) then the

> angle of twist is equal, provided that the saddle

> plate is attached to the center of the mount (really

> to the DoveLM). My plate conversion using the DAP13 is

> far worse, but I dont take long CCD exposures. It

> becomes apparent when stacking the images, my images

> drift in east-west directions and is worst at the

> zenith.

>

> Anyways, give it a try, it'll probably work out fine

> in your case on the 600e. One more note: the DoveLM

> hangs out more on one side than the other, which gives

> one more degree of adjustment to equalize twist if the

> weight is somewhat unequal.

>

> Tim

>







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