Quote:
Originally Posted by Renato1
Thanks, those instructions are a lot better than those we were looking at back in the 90s.
I had no idea that what was meant to be adjusted was the secondary mirror.
Regards,
Renato
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The autocollimator is a wonderful tool with the proper knowledge; however, it has to be of top quality. Not all autocollimators on the market (and there are only few choices) are equal.
Unfortunately, the autocollimator instructions provided in astrosystems documentation is incorrect. Even the theory behind the autocollimator described in the same documentation is incorrect.
The autocollimator is used for both secondary and primary axial alignment. You can refer to Vic Menard's CDP procedure for the proper method to use an autocollimator with a single central pupil
http://www.catseyecollimation.com/vicsCDP.html
I have written extensively about the autocollimator theory. Here is a link. Most of the info inside the link is academic and is not a required knowledge to use the autocollimator.
http://www.cloudynights.com/ubbthrea.../o/all/fpart/1
Jason