M81 M82

Messier 81 (also known as NGC 3031 or Bode’s Galaxy) is a spiral galaxy about 12 million light-years away in the constellation Ursa Major. Due to its proximity to Earth, large size and active galactic nucleus (which harbors a 70 million M☉ supermassive black hole)

Messier 82 (also known as NGC 3034, Cigar Galaxy or M82) is the prototype nearby starburst galaxy about 12 million light-years away in the constellation Ursa Major. The starburst galaxy is five times as bright as the whole Milky Way and one hundred times as bright as our galaxy’s center.

 

Object:

M81 and M82

Date:

February 28, 2013

Equipment:

Telescope: Takahashi Sky 90II with F/4.5 reducer/flattener

Camera: SBIG ST-2000XM w/ CFW9v2 (Astronomik HaLRGB)

Autoguider: Orion Starshoot

Guidescope: Orion 80mm Shorty

Mount: Celestron CG-5 Mount

Exposure Info:

L: 12 x 5 min

R: 6 x 3 min (2×2 binned)

G: 6 x 3 min (2×2 binned)

B: 6 x 3 min (2×2 binned)

Total Exposure Time: 1 hour 54 minutes

Processing:

Maxim DL 5.23, Photoshop CS6

Notes:

This was my third attempt at photographing M81 and M82. The focus is so much better the third time around. I did not bother posting the other two images but I did learn the importance of spending time making sure the focus was right.

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