Is this light imbal...
 
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Is this light imbalance due to either Flat, Dark, or Bias?

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 momo
(@mo-mo)
Neutron Star
Joined: 2 years ago
Posts: 122
Topic starter  

This Squid Nebula uses 12 Light (300 seconds), 20 DARK, 20 flats, 20 DARKFLAT, and 20 BIAS.
Telescope time rental services say the darkness of 21.5 SQM at night. Perhaps I think it was taken with that darkness, but the left and right brightness is imbalanced as if it were the effects of light pollution.

The camera is ASI2600MC Pro and the telescope is TAKAHASHI FSQ106-ED F/3.6.

APP Version 1.083.3

Thank you.

squid p11 300s St

 

This topic was modified 2 years ago by momo

   
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(@vincent-mod)
Universe Admin
Joined: 7 years ago
Posts: 5707
 

Seems like there was some, maybe the moon? You can easily get rid of this using the light pollution tool. 🙂 I would also suggest to update to 1.083.4 as quite some fixes were made in there.


   
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 momo
(@mo-mo)
Neutron Star
Joined: 2 years ago
Posts: 122
Topic starter  

@vincent-mod 

It looks like a moonlight as your advice suggests.
solved by light pollution tool.

 

Thank you


   
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