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Galaxies:

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NGC 7814 edge on galaxy 20 minutes at F10 binned 2x2

Located in Constellation Pegasus (the Winged Horse), this Lentical galaxy has a visual magnitude of 10.6, and has an apparent size of 6 arc minutes by 2.5 arc minutes.

NGC7814_m20_nf.jpg (12844 bytes)

 

 

M31 Andromeda spiral galaxy 6 minutes at F3.3.

Located in Constellation Andromeda (the Princess), this famous spiral galaxy is so large that a mosaic of several CCD pictures would be needed to show all of it.  The apparent size is 185 arc minutes by 75 arc minutes.  For comparison, the moon's apparent size is about 30 arc minutes. The Andromeda galaxy has a visual magnitude of 3.4 and surface brightness of 13.6.  It is 2.2 million years away, and 150,000 light years across in size.

M31_s360.jpg (19354 bytes)

 

 

M33 Whirlpool spiral galaxy 20 seconds at F3.3, RGB image

Located in Constellation Triangulum (the Triangle), this spiral galaxy is about 2.4 million light years away, and is about 50,000 light years across. and several billion years old.  Visual magnitude is about 5.7, and has an apparent size of 67 arc minutes by 41.5 arc minutes.  Note the unusually large number of young blue stars.  Also, the galaxy's light is spread out so evenly that it's effective surface brightness is a rather faint 14.2

M33_s20_30C_Wlrgb.jpg (47677 bytes)

 

 

NGC 151 bar galaxy composite of two 30 minute exposures at F10

Located in Constellation Cetus (the Whale), this bar galaxy has a visual magnitude is about 11.6, and has an apparent size of 3.3 arc minutes by 1.4 arc minutes.

NGC151_m30x2_35C_fi.jpg (52169 bytes)

 

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