Spiral Galaxy in Coma

Uploaded 6/10/2001

This 10.4 magnitude edge on spiral in Coma is 16x1.8 minutes in size, just slightly larger than my 15 min field seen here. This galaxy is very dusty, and contains no visible HII regions, or blue arms. The core is very bright and starlike, and easy to over expose. The deep yellow color gives the galaxy a B-V index of .84, about as ruddy as galaxies get. Low noise was achieved using water cooling, for a much colder temperature than was possible normally.

Instrument:  12.5" f/5 Home made Newtonian
CCD Camera:  SBIG ST7E
Exposure:  LRGB = 60:20:20:20 (RGB Binned 2x2)
Filters:  RGB Tricolor
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing 6/10, Transparency 6/10
Outside Temperature:  70 F
CCD Temperature:  -20 C
Processing:  Maxim DL, Photoshop, PW Pro.

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