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Contains:  M 101, NGC 5457
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M101 - The Pinwheel Galaxy, 


            Maarten Rolefes
M101 - The Pinwheel Galaxy

M101 - The Pinwheel Galaxy

Technical card

Resolution: 2975x2285

Dates:June 6, 2018July 13, 2018Feb. 26, 2019April 8, 2019April 9, 2019

Astrodon Luminance Tru-Balance E-Series Gen: 140x600" -15C bin 1x1
Astrodon RGB Tru-Balance E-Series Gen: 137x300" -15C bin 1x1

Integration: 34.8 hours

Avg. Moon age: 10.30 days

Avg. Moon phase: 25.94%

Bortle Dark-Sky Scale: 5.00 job: 2644154

RA center: 210.791 degrees

DEC center: 54.372 degrees

Pixel scale: 0.819 arcsec/pixel

Orientation: 268.397 degrees

Field radius: 0.427 degrees

Data source: Backyard


M101 - The Pinwheel Galaxy
This image is shot from my light polluted backyard using an Altair Astro Ritchey Chretien 10" telescope on an NEQ6 Pro mount. Camera used is an Atik 383L+ mono with Astrodon Luminance and RGB filters. Astro-Physics CCDT67 as a reducer. The image is composed of 23Hr Luminance data and 11 Hr RGB.

Total exposure is 34 Hr.



Maarten Rolefes
License: None (All rights reserved)

Sky plot

Sky plot


M101 - The Pinwheel Galaxy, 


            Maarten Rolefes