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INDI Library v2.0.6 is Released (02 Feb 2024)

Bi-monthly release with minor bug fixes and improvements

[FIXED] Atik 314 circular black spots on images?

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This is something which is bugging me a lot. There is this massive spot on every frames and I do not know what it is :huh:
The telescope lens appears to be dust free, the filter too and the CCD is also free of apparent dust bunnies.

Would anyone has a clue?
It's clearly visible in the bottom right corner.

Last edit: 4 years 6 months ago by Gonzothegreat.
4 years 6 months ago #42723
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Last edit: 4 years 6 months ago by Gonzothegreat.
4 years 6 months ago #42724

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Deffo a dust bunny, but where it’s located is the big question...looking at the size and darkness I would say camera sensor..
4 years 6 months ago #42743

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Dust on the lens of the telescope (in the pupil) is not visible in the image plane. It's too large to be on the sensor itself, so either on the camera cover glass or a filter. Try looking in from the lens side of the camera, else you have to closely look at those two (rather three, could be on both sides of a filter) surfaces when camera is removed from the telescope.
The displayed image is stretched, so the dirt might be quite inconspicuous.
4 years 6 months ago #42744

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try rotating the filter relative to the camera. If the spot moves it's on the filter, if it doesn't it's on the camera. It's also possible to calculate the distance the dust spot is from the sensor from its size and the focal ratio of the scope.
4 years 6 months ago #42766

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Thanks for the replies, I will have to check all of this in December now... it's a very remote observatory ;)
4 years 6 months ago #42784

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:D

The good message is that it should flatfield away without any problems (if you continue to observe remotely, that is)
4 years 6 months ago #42785

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I believe it is now fixed, I was able to remove t he protective glass in front of the CCD and clean the all thing.

4 years 3 months ago #47113
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