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Contains:  M 31, Great Nebula in Andromeda, NGC 224, M 32, NGC 221, M 110, NGC 205
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M31, 





    
        

            pterodattilo
M31

M31

Technical card

Resolution: 4188x2796

Dates:Sept. 20, 2017

Frames: 93x240" ISO400 19C

Integration: 6.2 hours

Darks: ~25

Bias: ~30

Avg. Moon age: 0.29 days

Avg. Moon phase: 0.09%

Bortle Dark-Sky Scale: 4.00

Astrometry.net job: 1810826

RA center: 10.658 degrees

DEC center: 41.132 degrees

Pixel scale: 2.512 arcsec/pixel

Orientation: 272.837 degrees

Field radius: 1.757 degrees

Locations: Rastignano, Pianoro, Bologna, Italy

Data source: Backyard

Description

This time I dropped my laziness and put a considerable effort in the post processing: made almost ten attempts with three different techniques, this generate a thread of considerable length in Startools forum and I learned a lot of things.

Unfortunately I had to stack without flats because my DIY flatbox is crappy: bought a new one last week ;-)

Comments

Author

pterodattilo
pterodattilo
License: None (All rights reserved)
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M31, 





    
        

            pterodattilo