M101 The Pinwheel galaxy

The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on spiral galaxy distanced 21 million light-years away in the constellation Ursa Major, first discovered by Pierre Méchain on March 27, 1781.

 

M101 is a large galaxy comparable in size to the Milky Way. With a diameter of 170,000 light-years it is roughly equal the size of the Milky Way. It has a disk mass on the order of 100 billion solar masses, along with a small central bulge of about 3 billion solar masses.

 

Details:

Mount: Mesu 200

Telescope: ODK10

Camera: QSI683 withBaader RGB filters and 3nm Ha Astrodon filter

 

Luminance 54x1800s

RGB 25x600s in each filter

Ha 17x1800s

 

This is 48 hours worth of data.

Done