Contains: NGC 5477, NGC 5473, M 101, NGC 5457
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Messier 101 crop

Technical card

Resolution: 2500x1777

Dates: May 19, 2017

Frames:
IDAS LPS D1: 46x250" ISO1000
Baader Luminance 2": 257x50" (gain: 139.00) -25C bin 1x1

Integration: 6.8 hours

Darks: ~50

Flats: ~20

Bias: ~100

Avg. Moon age: 22.61 days

Avg. Moon phase: 45.05%

Bortle Dark-Sky Scale: 3.00

Temperature: 15.00

Astrometry.net job: 1586720

RA center: 210.845 degrees

DEC center: 54.395 degrees

Pixel scale: 1.572 arcsec/pixel

Orientation: -86.920 degrees

Field radius: 0.670 degrees

Locations: Sternwarte am Bärenstein, Bärenstein, Sachsen, Germany

Comments

Author

Marcel Drechsler
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Revisions

B

Color improvement

Sky plot

Sky plot

Histogram

Messier 101 crop, Marcel Drechsler