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M31 - Andromeda Galaxy



 

Object:

M31: Andromeda Galaxy

RA = 00hr 42min; Dec = +41 deg 16 min

Date & Site:
Imaged on 8/26/11; Palomar Mountain
Equipment:

Telescope:Takahashi Sky90 Reftactor (407 mm F4.5)

Mount: Losmandy G-11 with Gemini
Camera: ST-10XME; CFW10 with Astrodon filters

Notes:

Conditions: 75 degrees; calm, excellent seeing

Exposures: 60 min Lum (15 x 4 min subs); 28 min each RGB (7 x 4 min subs 2x2 binned)

FOV = 126 x 85 arc minutes

M31 is 2.5 million light years away and is the dominant galaxy in our local group together with M32 and M110 two bright elliptical dwarf galaxies (also shown). Spectral studies show M31 to be approaching us at about 100km/sec.