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Contains:  Sculptor galaxy, NGC 253
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NGC 253 - Sculptor Galaxy (Theli, APF-R, v4), 





    
        

            Martin Junius
NGC 253 - Sculptor Galaxy (Theli, APF-R, v4)

NGC 253 - Sculptor Galaxy (Theli, APF-R, v4)

Technical card

Resolution: 4829x3219

Dates:Sept. 3, 2016

Frames: 29x480" ISO800

Integration: 3.9 hours

Darks: ~9

Flats: ~20

Bias: ~50

Avg. Moon age: 2.00 days

Avg. Moon phase: 4.46%

Bortle Dark-Sky Scale: 1.00

Mean SQM: 21.80

Temperature: 14.00

Astrometry.net job: 1667716

RA center: 11.893 degrees

DEC center: -25.290 degrees

Pixel scale: 0.589 arcsec/pixel

Orientation: -90.026 degrees

Field radius: 0.475 degrees

Locations: IAS Observatory Hakos, Hakos, Namibia

Description

New processing of last year's data, see also http://www.astrobin.com/265808/B/

Stacking with Theli, using only frames with FWHM <3.20, for a total of 26 R, 29 G, 24 B x 480s, color calibration with NOMAD.

For the final sharpening in Photoshop I applied the APF-R technique for the first time, see http://www.cedic.at/apfr/

Comments

Author

phtnnz
Martin Junius
License: Attribution-NonCommercial-NoDerivs Creative Commons
2745
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NGC 253 - Sculptor Galaxy (Theli, APF-R, v4), 





    
        

            Martin Junius