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M81 Bode Galaxy, 





    
        

            Daniel

M81 Bode Galaxy

Technical card

Resolution: 6708x4719

Dates:Feb. 14, 2019

Frames: 415x60" (gain: 120.00) -26C bin 1x1

Integration: 6.9 hours

Darks: ~104

Flats: ~12

Flat darks: ~12

Avg. Moon age: 8.97 days

Avg. Moon phase: 66.58%

Bortle Dark-Sky Scale: 4.00

Temperature: 5.00

Astrometry.net job: 2565743

Locations: Garten, Vechelde, Niedersachsen, Germany

Data source: Backyard

Description

I used the last, cloudless days to take the first pictures with my new ZWO ASI 294MC Pro.
I was realyexcited about the camera and the images. After 2 days imaging M81 I started postprocessing over 400 images in PixInsight. But I getting hit hard after doing the Background Extraction. Image C shows the desaster. There is a kind of lense effect around the galaxy i can't explain. I used my Baader Coma Corrector on my Newton Telescope like I did before with my DSLR.
The moon was at around 80% but seeing was really ok and humidity was on a lower level.
Maybe someone can give me some good advices or tell me ideas what is going wron with my images.

Comments

Author

TRIXMASTA
Daniel
License: None (All rights reserved)
1560
Like

Revisions

  • M81 Bode Galaxy, 





    
        

            Daniel
    Original
  • M81 Bode Galaxy, 





    
        

            Daniel
    D
  • Final
    M81 Bode Galaxy, 





    
        

            Daniel
    E

D

Image C shows the halo or lense effect iam not understanding. What is it and where does it come from? Can anyone help or do you have any ideas?

Histogram

M81 Bode Galaxy, 





    
        

            Daniel