Strange stars cross...
 
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Strange stars cross mark on Luminance channel appearing after integration  

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(@sebaastro)
Molecular Cloud Customer
Joined: 3 months ago
Posts: 5
June 9, 2021 13:09  

Hello,

I have been using APP for few weeks now and loving it. For the first time i came across a strange issue: after completing the integration the luminance channel shows some cross marks on stars. I have not changed any setting and usually I leave them as shown. The other channels are free from these marks.

 

Any idea what they would be caused from?

 

This topic was modified 1 month ago by Sebastiano Romano

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(@sebaastro)
Molecular Cloud Customer
Joined: 3 months ago
Posts: 5
June 9, 2021 13:12  

adding correct image...sorry

M63 stars problem

 


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3550
June 9, 2021 14:14  

Very interesting, not seen that before i think. Can you post a screenshot of your masterdark, masterbias and masterflat as well? Just to have a quick look. I'll probably ask for some of the data as well later.


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(@sebaastro)
Molecular Cloud Customer
Joined: 3 months ago
Posts: 5
June 9, 2021 14:54  

OK Thanks.

Attached as requested.

Also note that I use a refractor so those artifacts are generated by the software and not by the lens. I use FLAT DARK instead of BIAS frames. Never had this issue.

Master DARK
Master DARK FLAT
Master FLAT

 


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3550
June 9, 2021 15:07  

Thanks, seems ok, so I'd have to see the data to check further.

Please upload some of the relevant subs to our server;

Go to https://upload.astropixelprocessor.com and use upload1 as username and upload1 as password.

Create a directory named “sebaastro-crosses” and upload in there. Thank you!


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(@sebaastro)
Molecular Cloud Customer
Joined: 3 months ago
Posts: 5
June 9, 2021 16:03  

I have uploaded 7 original light frames (from different sessions).

One note that could help to narrow down the root cause: the integration is a 5 sessions (nights) but for the first session i didn't have any luminance but only RGBHa frames. This is the only thing different I did this time from previous integrations i have made with APP.

 

 


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3550
June 9, 2021 16:14  

Would you mind also uploading your master calibration files?  Forgot to mention that sorry.


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(@sebaastro)
Molecular Cloud Customer
Joined: 3 months ago
Posts: 5
June 9, 2021 16:29  

No problem. Just finished to upload those as well.


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