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M31 is the closest and hence brightest spiral galaxy. Known simply as the "Andromeda Galaxy", it is an easy naked-eye object, stretching across 4 degrees of space, and requiring very low power for good seeing. The galaxy contains an estimated 300 billion stars and is nearly 200,000 light years across making it one of the largest galaxies known. The whole mass slowly rotates around the central hub, the core takes about 11 million years while the outer arms 90 million years or more. Some say that M31 looks much like the Milky-Way would from the same distance.
Photographic Data:
Telescope:
Celestron 14" SCT
Focal
Ratio: f/11
Focal Length:
3910mm
Film Speed:
ISO 1000
Exposure Time: 15 min
Date:
UTC
Time:
UTC
Location Data:
Latitude:
37° 33'
Longitude:
120° 47'
Astronomical Data:
RA:
0hr 43min
Decl:
41° 15'
Altitude:
43° 34'
Azmuth:
65° 21'
Type:
Spiral Galaxy, type Sb
Magnitude:
3.5