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Contains:  M 101, NGC 5457, NGC 5477
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Pinwheel Galaxy (Messier 101), 


            Miles Zhou
Pinwheel Galaxy (Messier 101)
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Pinwheel Galaxy (Messier 101)

Technical card

Imaging telescope or lens:RCOS 14.5"

Imaging camera:SBIG STX 16803


Guiding telescopes or lenses:

Guiding cameras:

Focal reducers:

Software:Adobe Lightroom CCPixInsight for Mac

Filters:Astrodon luminance filterAstrodon RGB


Resolution: 4096x4096

Dates:May 1, 2017June 22, 2017

Astrodon LRGB Gen2 E-Series Tru-Balance Filters: 45x1200" -25C bin 1x1
Astrodon luminance filter: 25x1200" -25C bin 1x1

Integration: 23.3 hours

Darks: 0

Flats: 0

Flat darks: 0

Bias: 0

Avg. Moon age: 16.66 days

Avg. Moon phase: 18.10%

Bortle Dark-Sky Scale: None

Mean SQM: None

Mean FWHM: None

Temperature: None

Basic astrometry details job: 1829133

RA center: 14h 3' 19"

DEC center: +54° 23' 56"

Pixel scale: 0.550 arcsec/pixel

Orientation: 249.478 degrees

Field radius: 0.443 degrees

Locations: Deep Sky West, Rowe, New Mexico, United States


The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on spiral galaxy distanced 21 million light-years away from earth in the constellation Ursa Major.

This is a LRGB Composition.



Miles Zhou
License: None (All rights reserved)

Sky plot

Sky plot


Pinwheel Galaxy (Messier 101), 


            Miles Zhou

In these public groups

Members of Deep Sky West