Messier M31

Object Information
Messier object: M31
Common name for Messier object: Andromeda Galaxy
NGC (New General Catalog) number: NGC 224
Discription: Spiral Galaxy
Located in constellation: Andromeda
Right ascension in hours minutes: 0:42.7
Declination in degrees minutes: 41:16
Visual magnitude: 3.4
Size: 178 x 63 arc minutes
Image size: 70.13 arc minutes high by 70.79 arc minutes wide
Image orientation: North is right, East is top
Detailed discription of M31 in SEDS Messier database
Other Messier galleries, images or catalogs

Observing Log
Date of observation: September 19, 1998
Time at end of first CCD image 22:12 PDT
Time at end of last CCD image 23:11 PDT
Observing Location: At home on the drive way
Observation of object: M31 is the brightest and largest visual galaxy in the Messier list. Two dark lanes can be seen north of the center. North was put on the right side because most M31 images show the galaxy in this orientation. Two of M31 companions galaxies, M32 & M110, are shown in the image. M32 galaxy is south of M31's center and M110 galaxy is northwest of M31's center.
Sky Conditions
Sky transparency: 5.0 (Magnitude of the faintest star visible with the unaided eye in Ursa Minor)
Moon rise at 6:46 PDT on September 20, 1998
Astronomical twilight ends in the evening at 20:52 PDT on September 19, 1998
Astronomical twilight starts in morning at 5:10 PDT on September 20, 1998
Observing Equipment
80 mm aperture refractor telescope and CCD Cookbook Camera
CCD image time: Three sets of 4 - 240 seconds images added together and then combined into one image
CCD dark calibration frames: 23 - 240 seconds dark frames

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