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ASI071 flat issue?

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3 replies to this topic

#1 mhooper

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Posted 23 March 2025 - 11:21 PM

Can someone take a look at the flat from an ASI071mc pro. It looks nothing like any other flat take with my ASI 183mc, 533mc or 2600mc pro cameras.I used my Asiair with auto exposure calculation. 

https://drive.google...?usp=drive_link, https://drive.google...?usp=drive_link



#2 bobzeq25

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Posted 24 March 2025 - 12:38 AM

People drive themselves crazy looking at flats in isolation. The only thing that counts is how flats (which need to be calibrated with bias) correct your lights.

So, what are your problems there?

#3 sharkmelley

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Posted 24 March 2025 - 12:50 AM

Your first link is private, so no-one can download the file. 

 

The flat in the second link is very unusual with some kind of out-of-focus structure, all at a similar scale.  Maybe it's smears and dust on the sensor?  It would certainly help if we knew what optics were used to shoot the flat.  However, as bobzeq25 says, you might find that the flats calibrate your lights perfectly.



#4 mhooper

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Posted 24 March 2025 - 03:44 PM

Thanks for the replies. Hopefully I will be able to collect the rest of my calibration frames and some lights tonight. I used to seeing dust motes but this looks different to me (like a damaged sensor) and I bought this camera used from CN and was/am worried I got a lemon. I have it connected to my Aksar 103 APO with 1X flattener. 


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