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peter clark
member


Reged: 09/25/07

Re: The South Cave Collimator System new [Re: nirvanix]
      #5011073 - 01/10/12 05:52 PM

What success have you found with the South Cave Collimator?

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peter clark
member


Reged: 09/25/07

Re: The South Cave Collimator System new [Re: Jason D]
      #5535795 - 11/23/12 04:03 PM

Hi Jason,
Good drawings shown in optical desire progress from A to C.
However B and C need to swop positions because to produce a concentric star at slightly de-focussed image the reflection angle needs to be something other than 90 degrees. Your B is fine for the completion of bench testing and so ready for a star test to produce any off-set needed to complete collimation. 3 telescopes now with no image shift when going from one side of focus to the other.
Best regards,
Peter


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Starman1
Vendor (EyepiecesEtc.com)
*****

Reged: 06/24/03

Loc: Los Angeles
Re: The South Cave Collimator System new [Re: peter clark]
      #5535984 - 11/23/12 06:15 PM

I have gone back and re-read the original article for the tenth time.
It is obvious the originator does not speak English as a native speaker, or has gone to the "Yoda" school of Buddhist Obtuse Sayings, because I simply cannot make sense of what he is describing.
Also, none of the attachments or photos in this thread download correctly, and I get "damaged file" messages on most of them.
From what I do understand, though, the alignment method is similar to the techniques you might use on an f/10-f/15 scope, though oddly backwards from how it is currently done, but will not be successful on an f/4.5 newtonian.


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peter clark
member


Reged: 09/25/07

Re: The South Cave Collimator System new [Re: Jason D]
      #5536989 - 11/24/12 10:35 AM

Hello again Jason,
I benefitted from your drawings 3 years ago nearly. However,I now your B & C drawings need to change positions because B is more like the mechanical set up when optically collimated by a star, owing to 90 degrees not being the best reflection angle. So the new order suggest A needs collimating. B (your C) shows completion of bench collimating. I've a drawing to show. Best regards,
Peter Clark


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