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Annual RC collimation results.

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#1 asanmax

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Posted 02 August 2021 - 08:47 PM

Just wanted to share a before and after image of my RC scope collimation.

I typically don't touch the collimation screws more than once a year.

This time I had to do that long after the primary mirror cleaning as I was not really happy with the star shapes in the images.

As usual I used the Cheshire eyepiece and the method described in the following sheet: https://www.astronom...n-sheet-pdf.pdf

 

I roughly collimated the scope indoors using the Cheshire. It took me about 30 minutes. After I was happy with the result, I moved the scope outside and attached a camera to it.

This helped me to continue the process looking at the star shape in live view on the laptop screen. 

Here is the eyepiece that I used

 

Cheshire1.JPG

 

Cheshire2.JPG

 

And here is the before and after image. The before is a bit blurred as I had to zoom in a bit.

 

Collimation before after.jpg

 

At this point I am very happy with the result and hopefully tonight I'll be able to test the scope shooting at prime focus.


Edited by asanmax, 02 August 2021 - 08:48 PM.

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#2 sunrag

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Posted 11 September 2021 - 11:02 AM

Nice!

Were the before and after images taken during the same session? 



#3 asanmax

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Posted 11 September 2021 - 02:43 PM

Nice!

Were the before and after images taken during the same session? 

Yes, the first one is a bit blurry because the scope did not acclimate completely.




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