VintageBigBlue.org

 

Re: Polar aligning with a laser beam - How about a variation?


Jul 2, 2003

 


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

#16024 Jul 2, 2003

I have used this self invented method for many years now on my former

mounts (EQ6 and GP-DX) and intend to do it on my newly bought GM11.



The method is very easy: Attach a cheap laser-pointer on the polar axis

part of the mount - but so that it points backwards and at least 10 meters -

to the ground. Hence it has to be raised a little. Its important that this

is very rigid - glueing wont do in my experience - it will have to be

screwed in some way to the mount. It must not move the slightest when you

take in/out the mount or if you touch it too hard.



Now make your "perfect" polar alignement - hit the light button on the

laser and place a rigid white solid board where the beam hits. Make a solid

mark there. (I have also made some target rings around the hit spot.)



Now, the next time you take out the telescope, if you just keep the tripod

leg heights and placement on the ground within a few centimeters (do mark

the places of the feet on the ground, or do as I - use pre-downed

poleholders, they fit perfectly to most tripods..), then for "obvious"

arithmetic reasons, if you adjust the AZ and EL screws so that the laser

again pionts at the hit spot - You are perfectly aligned again with great

amplification.



For my new GM11 I have built a concrete pier - but I will have to take in

the mount anyway now and then so I will do this assembly - but might point

towards my neighbors chimney or so - to get even more

amplification/precision.



Goran



p.s.



Sent this idea twice before, to sci astro in 98 but no one reacted.















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



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

#16037 Jul 3, 2003

Sounds like a great idea. I can lase my garage wall 10 yards away by

placing a mirror flat on the driveway where it first hits. I could

put a red sticker on that spot on the wall as a target.



Could the laser be attached somewhere with hot glue. It could be

removed anytime later with a sharp rap, or a little heat.





-- In Losmandy_users@yahoogroups.com, "G. Thisell" info@s...> wrote: >

> I have used this self invented method for many years now on my

former > mounts (EQ6 and GP-DX) and intend to do it on my newly bought GM11.

>

> The method is very easy: Attach a cheap laser-pointer on the

polar axis > part of the mount - but so that it points backwards and at least 10

meters - > to the ground. Hence it has to be raised a little. Its important

that this > is very rigid - glueing wont do in my experience - it will have to

be > screwed in some way to the mount. It must not move the slightest

when you > take in/out the mount or if you touch it too hard.

>

> Now make your "perfect" polar alignement - hit the light button

on the > laser and place a rigid white solid board where the beam hits.

Make a solid > mark there. (I have also made some target rings around the hit

spot.) >

> Now, the next time you take out the telescope, if you just keep

the tripod > leg heights and placement on the ground within a few centimeters

(do mark > the places of the feet on the ground, or do as I - use pre-downed

> poleholders, they fit perfectly to most tripods..), then

for "obvious" > arithmetic reasons, if you adjust the AZ and EL screws so that the

laser > again pionts at the hit spot - You are perfectly aligned again with

great > amplification.

>

> For my new GM11 I have built a concrete pier - but I will have to

take in > the mount anyway now and then so I will do this assembly - but

might point > towards my neighbors chimney or so - to get even more

> amplification/precision.

>

> Goran

>

> p.s.

>

> Sent this idea twice before, to sci astro in 98 but no one

reacted. >

>

>

>

>

>

>

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



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

#16038 Jul 3, 2003

Hi Goran,



My mount is on a wheeled platform. When it is rolled out of the observatory

I lower it so that 2 index pins on the platform drop into holes drilled in

my concrete observing pad. The polar alignment, though close, still moves a

little each time. I plan on trying your laser trick to do the fine

adjustments.



I will report later on how well it works.



Thanks for the tip.



Bob



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

#16039 Jul 4, 2003

Hot glue didnt work for me, but maybe you have a better climate than I have

in Sweden... Though it can easilly be peeled of - so why not try it first to

see if the method works for you!

Good luck.

Goran



-----Ursprungligt meddelande-----

Fr.n: badger_al [mailto:abarak@...]

Skickat: den 4 juli 2003 03:08

Till: Losmandy_users@yahoogroups.com

.mne: [Losmandy_users] Re: Polar aligning with a laser beam.





Sounds like a great idea. I can lase my garage wall 10 yards away by

placing a mirror flat on the driveway where it first hits. I could

put a red sticker on that spot on the wall as a target.



Could the laser be attached somewhere with hot glue. It could be

removed anytime later with a sharp rap, or a little heat.





-- In Losmandy_users@yahoogroups.com, "G. Thisell" info@s...> wrote: >

> I have used this self invented method for many years now on my

former > mounts (EQ6 and GP-DX) and intend to do it on my newly bought GM11.

>

> The method is very easy: Attach a cheap laser-pointer on the

polar axis > part of the mount - but so that it points backwards and at least 10

meters - > to the ground. Hence it has to be raised a little. Its important

that this > is very rigid - glueing wont do in my experience - it will have to

be > screwed in some way to the mount. It must not move the slightest

when you > take in/out the mount or if you touch it too hard.

>

> Now make your "perfect" polar alignement - hit the light button

on the > laser and place a rigid white solid board where the beam hits.

Make a solid > mark there. (I have also made some target rings around the hit

spot.) >

> Now, the next time you take out the telescope, if you just keep

the tripod > leg heights and placement on the ground within a few centimeters

(do mark > the places of the feet on the ground, or do as I - use pre-downed

> poleholders, they fit perfectly to most tripods..), then

for "obvious" > arithmetic reasons, if you adjust the AZ and EL screws so that the

laser > again pionts at the hit spot - You are perfectly aligned again with

great > amplification.

>

> For my new GM11 I have built a concrete pier - but I will have to

take in > the mount anyway now and then so I will do this assembly - but

might point > towards my neighbors chimney or so - to get even more

> amplification/precision.

>

> Goran

>

> p.s.

>

> Sent this idea twice before, to sci astro in 98 but no one

reacted. >

>

>

>

>

>

>

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





Yahoo! Groups Sponsor

ADVERTISEMENT









To unsubscribe from this group, send an email to:

Losmandy_users-unsubscribe@egroups.com







Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.





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







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

#16045 Jul 4, 2003

Maybe RTV (silicone sealer) would work. It would not be hard and be

easily knocked off by a bump. Also, it can be peeled of metal

surfaces easily.



I marked the place in my driveway where the tripod legs go. I put

masking tape around the legs, and spray painted around the leg to

give a perfect square where they go. With full leg extension, it is

easy to re-align. No need to even level the mount, it is very close

anyways.





--- In Losmandy_users@yahoogroups.com, "G. Thisell" info@s...> wrote:

> Hot glue didnt work for me, but maybe you have a better climate

than I have

> in Sweden... Though it can easilly be peeled of - so why not try it

first to

> see if the method works for you!

> Good luck.

> Goran

>

> -----Ursprungligt meddelande-----

> Fr.n: badger_al [mailto:abarak@c...]

> Skickat: den 4 juli 2003 03:08

> Till: Losmandy_users@yahoogroups.com

> .mne: [Losmandy_users] Re: Polar aligning with a laser beam.

>

>

> Sounds like a great idea. I can lase my garage wall 10 yards

away by

> placing a mirror flat on the driveway where it first hits. I

could

> put a red sticker on that spot on the wall as a target.

>

> Could the laser be attached somewhere with hot glue. It could be

> removed anytime later with a sharp rap, or a little heat.

>

>

> -- In Losmandy_users@yahoogroups.com, "G. Thisell" info@s...>

wrote:

> >

> > I have used this self invented method for many years now on my

> former

> > mounts (EQ6 and GP-DX) and intend to do it on my newly bought

GM11.

> >

> > The method is very easy: Attach a cheap laser-pointer on the

> polar axis

> > part of the mount - but so that it points backwards and at

least 10

> meters -

> > to the ground. Hence it has to be raised a little. Its important

> that this

> > is very rigid - glueing wont do in my experience - it will have

to

> be

> > screwed in some way to the mount. It must not move the slightest

> when you

> > take in/out the mount or if you touch it too hard.

> >

> > Now make your "perfect" polar alignement - hit the light

button

> on the

> > laser and place a rigid white solid board where the beam hits.

> Make a solid

> > mark there. (I have also made some target rings around the hit

> spot.)

> >

> > Now, the next time you take out the telescope, if you just

keep

> the tripod

> > leg heights and placement on the ground within a few centimeters

> (do mark

> > the places of the feet on the ground, or do as I - use pre-

downed

> > poleholders, they fit perfectly to most tripods..), then

> for "obvious"

> > arithmetic reasons, if you adjust the AZ and EL screws so that

the

> laser

> > again pionts at the hit spot - You are perfectly aligned again

with

> great

> > amplification.

> >

> > For my new GM11 I have built a concrete pier - but I will

have to

> take in

> > the mount anyway now and then so I will do this assembly - but

> might point

> > towards my neighbors chimney or so - to get even more

> > amplification/precision.

> >

> > Goran

> >

> > p.s.

> >

> > Sent this idea twice before, to sci astro in 98 but no one

> reacted.

> >

> >

> >

> >

> >

> >

> >

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

>

>

> Yahoo! Groups Sponsor

> ADVERTISEMENT

>

>

>

>

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

> Losmandy_users-unsubscribe@egroups.com

>

>

>

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

Service.

>

>

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



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

#16050 Jul 4, 2003

When I saw this post, I could only think of the Green Laser pointers now so

popular at star parties. They seem to go straight up to the stars (obviously they

do not).



I thought you were going to say that you could make a collar for one, so you

could insert it like a polar scope. Then you just adjust the mount so the laser is

hitting the celestial pole (you could determine its location with a planisphere).



Should work.

--- In Losmandy_users@yahoogroups.com, "G. Thisell" info@s...> wrote:

>

> I have used this self invented method for many years now on my former

> mounts (EQ6 and GP-DX) and intend to do it on my newly bought GM11.

>

> The method is very easy: Attach a cheap laser-pointer on the polar axis

> part of the mount - but so that it points backwards and at least 10 meters -

> to the ground. Hence it has to be raised a little. Its important that this

> is very rigid - glueing wont do in my experience - it will have to be

> screwed in some way to the mount. It must not move the slightest when you

> take in/out the mount or if you touch it too hard.

>

> Now make your "perfect" polar alignement - hit the light button on the

> laser and place a rigid white solid board where the beam hits. Make a solid

> mark there. (I have also made some target rings around the hit spot.)

>

> Now, the next time you take out the telescope, if you just keep the tripod

> leg heights and placement on the ground within a few centimeters (do mark

> the places of the feet on the ground, or do as I - use pre-downed

> poleholders, they fit perfectly to most tripods..), then for "obvious"

> arithmetic reasons, if you adjust the AZ and EL screws so that the laser

> again pionts at the hit spot - You are perfectly aligned again with great

> amplification.

>

> For my new GM11 I have built a concrete pier - but I will have to take in

> the mount anyway now and then so I will do this assembly - but might point

> towards my neighbors chimney or so - to get even more

> amplification/precision.

>

> Goran

>

> p.s.

>

> Sent this idea twice before, to sci astro in 98 but no one reacted.

>

>

>

>

>

>

>

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







Contact Us
This Site's Privacy Policy
Google's privacy policies

S
e
n
i
o
r
T
u
b
e
.
o
r
g