The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on, counterclockwise intermediate spiral galaxy located 21 million light-years from Earth in the constellation Ursa Major. It was discovered by Pierre Méchain in 1781 and was communicated that year to Charles Messier, who verified its position for inclusion in the Messier Catalogue as one of its final entries.
Object Designations: M101, Messier 101, NGC5457
Also known as: Pinwheel Galaxy
Constellation: Ursa Major
Object Type: spiral galaxy
Distance: 21.6 million light-years away
Magnitude: 9.9
Discovery: Pierre Méchain
Telescope: Celestron 9.25 SCT 2350 mm / f10
Camera: ZWO ASI2600 MC Pro – No Filter
Mount: Celestron CGEMII – With CPWI Software
Guiding: Celestron StarSense Autoguider
SharpCap Imaging Software
Processing Software
AstroSharp Ltd SharpCap
Pleiades Astrophoto PixInsight
Russell Croman Astrophotography BlurXTerminator
Russell Croman Astrophotography NoiseXTerminator
Russell Croman Astrophotography StarXTerminator
Stanley Dimant EZ Processing Suite
This final image is:
20 – 240 second subs at 100 gain, no filter
White Bal (B) = 76
White Bal (R )= 93
Brightness = 12
Camera Temperature = -7.9
LastPlateSolveData=Plate solve result was RA=14:04:29.1,Dec=+54:13:47 with mount at RA=14:04:23.8,Dec=+54:14:21, FOV 0.623×0.416 degrees, up is 88.02 degrees East of North
