Contains: NGC 5477, NGC 5474, NGC 5473, M 101, NGC 5457, NGC 5422
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M101 (cropped)

Technical card

Resolution: 1778x938

Dates: June 1, 2013

Frames: 25x150" ISO1250

Integration: 1.0 hours

Avg. Moon age: 22.85 days

Avg. Moon phase: 42.54%

Bortle Dark-Sky Scale: 4.00

Astrometry.net job: 384852

RA center: 210.805 degrees

DEC center: 54.348 degrees

Orientation: 92.517 degrees

Field radius: 1.017 degrees

Description

180mm @ f/4

Excellent web resource:

http://astronomerica.awardspace.com/sdss-images-intro.php

Comments

Author

Jan Curtis
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Revisions

Sky plot

Sky plot

Histogram

M101 (cropped), Jan Curtis