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Pier mounting a CGEM

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#1 jbattleson

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Posted 21 April 2009 - 02:27 PM

I am getting ready to mount my CGEM 1100 on a pier. Does anyone have a drawing of the bolt pattern to attach it to the pier top plate?
I hate to take the scope down to get the info. but will do that if no one has a print.
John

#2 DrBuck

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Posted 23 April 2009 - 11:02 AM

I would call Celestron technical support. They should be able to get you a bolt pattern!!

#3 Strgazr27

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Posted 23 April 2009 - 11:26 AM

John,

The bolt pattern is the same as the Atlas (At least should be) 1 Center bolt and the bolt for the Az pin. A quick google search should turn up what your looking for.

This may help.

This

I think this is what you want

Hope those help.

#4 jbattleson

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Posted 23 April 2009 - 05:10 PM

I call Celestron last week and they told me none were available. They will email one to me if they can find one.
So far nothing.

John

#5 jbattleson

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Posted 23 April 2009 - 05:18 PM

Thanks for the link. I don't think that will work.
The CGEM has 1 bolt in middle but there are 2 pilots
to locate. One is 65MM dia. and the other is 30MM.
I have a drawing now but thanks anyway for your help.
If anyone would like the drawing I could email to them.

John :bow:

#6 jbattleson

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Posted 25 April 2009 - 06:29 PM


I have attached a preliminary drawing of my pier.
Feedback and suggestions are welcome.
John

Attached Files



#7 Strgazr27

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Posted 26 April 2009 - 06:49 AM

Thanks for the link. I don't think that will work.
The CGEM has 1 bolt in middle but there are 2 pilots
to locate. One is 65MM dia. and the other is 30MM.
I have a drawing now but thanks anyway for your help.
If anyone would like the drawing I could email to them.

John :bow:


The Atlas uses the same pattern. They are 2 different locations for the Azimuth pin. These simply allow you to position North either inline with a tripod leg or between 2 tripod legs. we set up 3 of these at NEAF.

Otherwise the pier looks like it will be VERY solid. You don't list a dimension for the distance between the 2 plates. Just make sure you leave enough to insert and remove the center bolt without having to remove the whole top plate. I speak from experience ;)

#8 jbattleson

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Posted 26 April 2009 - 10:13 AM

Thanks for the feedback.
I was going to leave 2 1/2 to 3 inches between the
plates on top. I can change that by using longer threaded rod
so shouldn't be a problem.
John






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