Object: The Andromeda Galaxy – M31 (2012)
(Messier 31, M31, or NGC 224)
A large spiral galaxy in our “local group” of galaxies named for the mythological princess Andromeda and located in the Constellation of Andromeda. The galaxy is estimated to be 2.5 million light years distant and is estimated to be 220,000 light years across with a halo weighing in at 1.23 trillion solar masses containing over a trillion suns within its boundaries.
Acquisition Date: 11/15/2012 – 11/19/2012
Camera: SBIG ST8300M @ -12°C
Telescope: Canon 200mm F2.8 L ULTRASONIC Lens
Mount: Losmandy G11 with Gemini II
Guidescope: ATLE80 80mm at f/4.8
Guide Camera: Orion SSAG with Televue TRF2008 0.8x reducer
Filters:
-Luminance30 x 5 min. (150 min.)
-Red: 24 x 5 min. (120 min.)
-Green:24 x 5 min. (120 min.)
-Blue:24 x 5 min. (120 min.)
-Hydrogen Alpha (Ha): 12 x 5min. (60min.)
Total Exposure: 570min. (9.5hr)
Limiting Magnitude: 5.1
Comments: LRGB used with IDAS LP2 72mm light pollution filter.
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