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Weird stars

Rafael Sampaio
in General
Hi Adam,

What could be the cause of this weird stars in my image? I was made by a CDK 17,L550 mount, collimated using SkyWave.

Best Regards,

Rafael

Comments

  • BlockHeadBlockHead
    If you are talking about the extra small spikes- this is because you have a minor turned down edge (TDE). This can be minimized/fixed with a mask of the primary mirror. It appears very minor to me.
    If you are talking about the small wiggle of the left spike- this is because there is a change in thickness of one of the vanes. Typically this is because of the cable/wire that runs across the vane to the secondary mirror (for some reason).

    Rafael, you did not indicate what precisely the "weird" element was in the image. I am just making my best guess. I do not see a collimation issue in this image. I would appreciate if you get back to me and let me know I am correct.

    Thanks,

    -the Blockhead
  • Rafael Sampaio
    Thanks Adam! That's perfect, I was talking about the exactly elements you mentioned. And in this unprocessed image, you the format of the stars looks not very round to me. Any clue?
    Sem Título_2.jpg
    2814 x 1838 - 3M
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