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Help With 1986 Comet Catcher

Celestron Classic Collimation EAA Optics Polar Alignment
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4 replies to this topic

#1 GaryShaw

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Posted 15 May 2021 - 01:38 PM

Hi

After having cleaned the mirrors for the first time ever, I am about to attempt to re/collimate my 1986 Comet Catcher. 

 

I believe the 3 numbered screws shown close to the edge control the mirror adjustment and the large center screw is a ‘lock’ screw. Before I fool with them I hope someone can confirm the above or correct my initial guess on what each of these does. 

 

Comments and suggestions about collimating this OTA would be very much appreciated. 
thank you!

 

Gary
 

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#2 CHASLX200

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Posted 15 May 2021 - 02:57 PM

I don't see how it could be a 1986 if it is orange.



#3 Hondo

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Posted 15 May 2021 - 04:57 PM

This link to the manual may be of help.

 

https://www.manualsl...et-Catcher.html



#4 GaryShaw

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Posted 16 May 2021 - 09:21 AM

This link to the manual may be of help.

 

https://www.manualsl...et-Catcher.html

Thank you. I have the original manual from 1986 but it does not indicate what the large center screw is on the rear of the primary mirror cell. The procedure for adjusting the primary is silent regarding that screw so I am trying to learn from others who have the same version of this scope and have done collimation.

cheers

Gary



#5 lphilpot

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Posted 16 May 2021 - 12:05 PM

I suspect the center screw is just a pivot connection.




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