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Contains:  M 101, NGC 5457, The star 81UMa, The star 82UMa, The star 21CVn, The star 78UMa, The star 24CVn, The star 83UMa, The star Alcor (80UMa), The star Mizar (ζUMa), Benetnasch (ηUMa), The star Alkaid, Part of the constellation Ursa Major (UMa)
Getting plate-solving status, please wait...
M101 & M51 at 50mm, 


M101 & M51 at 50mm

M101 & M51 at 50mm

Technical card

Resolution: 3540x2380

Dates:April 7, 2015

Frames: 72x2" ISO1600

Integration: 0.0 hours

Darks: ~25

Bias: ~64

Avg. Moon age: 17.54 days

Avg. Moon phase: 91.55%

Temperature: 6.00 job: 596029

RA center: 203.004 degrees

DEC center: 53.106 degrees

Pixel scale: 17.438 arcsec/pixel

Orientation: 103.260 degrees

Field radius: 10.333 degrees


Pushing the limits on what can be done with a simple DSLR & retail lens on a tripod.

Managed to get bits of M51 & faint features of M101 at 50mm focal length



License: Attribution-NonCommercial-ShareAlike Creative Commons

Sky plot

Sky plot


M101 & M51 at 50mm,