Contains: NGC 5486, NGC 5485, NGC 5477, NGC 5474, NGC 5473, M 101, NGC 5457, NGC 5422
Getting plate-solving status, please wait...

Pinwheel Galaxy - M101

Technical card

Imaging telescope or lens: Takahashi FSQ 106 EDX III

Imaging camera: QSI 683 WSG8

Mount: Paramount MyT

Guiding telescope or lens: Takahashi FSQ 106 EDX III

Guiding camera: QSI 683 WSG8

Software: PixInsight

Filter: Astrodon LRGB CCD Gen II E-Series

Resolution: 1600x1115

Dates: March 31, 2016

Frames: 62x900"

Integration: 15.5 hours

Avg. Moon age: 22.01 days

Avg. Moon phase: 51.44% job: 1041724

RA center: 210.823 degrees

DEC center: 54.366 degrees

Pixel scale: 4.105 arcsec/pixel

Orientation: -89.690 degrees

Field radius: 1.112 degrees

Locations: Deep Sky West Observatory, Rowe, MN, United States


This is the Pinwheel Galaxy, M101, in a wide-ish field LRGB composite. Usually one would image this beauty at a slightly larger focal length, but this wider field puts the galaxy into a nice context. M101 is a large galaxy, quite comparable to the Milky Way. With a diameter of 170,000 light-years it is about equal in size. It has a disk mass of around 100 billion solar masses, along with a central bulge of about 3 billion solar masses.

The image is composed of 24 x 900 sec luminance and (16,20,20) x 600 sec RGB frames taken at the Deep Sky West Observatory. Standard processing with modest color enhancement.




Sky plot

Sky plot


Pinwheel Galaxy - M101,