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Photonewton collimation primer

Astrophotography Collimation Imaging
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#1 tommy_nawratil

tommy_nawratil

    Sputnik

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Posted 09 April 2021 - 02:11 PM

hi,

 

having experience with Newtonians and related instruments since long, I have developed a maybe new method for collimating them especially for imaging.

There is a basic collimation with laser, and finetuning systematically using the startest and the symmetry of offaxis aberrations, and with the camera as a measuring device.

That means the collimation is done with the very equipment you use for your photography, and therefore optimized for that.

I have described everything somewhat lengthy maybe, but for the sake to instruct newbies to the topics as well. 

 

https://data.tommyna...n_Primer_EN.pdf

 

I had great success using it for Takahashi Epsilon Astrographs, too.

First I developed it when finetinung the field correction of some FSQ106 samples that had problems with star forms at the corners.

So I think the method is applicable to any imaging system, if you know how to adjust them.

 

Hope it helps you! Your feedback is welcome!

 

best regards

Tommy


Edited by tommy_nawratil, 09 April 2021 - 02:28 PM.

  • psandelle, gatsbyiv, vehnae and 4 others like this

#2 vakulenko_sergiy

vakulenko_sergiy

    Ranger 4

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Posted 10 April 2021 - 06:50 AM

Thank you for this document! I'm also a big fan of newtonians and it would be helpfull



#3 Maurice Toet

Maurice Toet

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  • Loc: Zoetermeer, Netherlands

Posted 10 April 2021 - 06:57 AM

Excellent article with some eye openers for recognising types of errors. Thank you for sharing, Tommy. I will use a full Moon night to improve the collimation of my Epsilon-180ED.


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