The Andromeda Galaxy is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years; 2.4×1019 km) from Earth. Also known as Messier 31, M31, or NGC 224, it is often referred to as the Great Andromeda Nebula in older texts. The Andromeda Galaxy is the nearest major galaxy to the Milky Way, but not the nearest galaxy overall. It gets its name from the area of the sky in which it appears, the constellation of Andromeda, which was named after the mythological princessAndromeda. The Andromeda Galaxy is the largest galaxy of the Local Group, which also contains the Milky Way, the Triangulum Galaxy, and about 44 other smaller galaxies.
- Imaging telescopes or lenses: William Optics GTF 81 APO 81GTF
- Mounts: Orion Atlas EQ-G
- RA center: 10.701 degrees
- DEC center: 41.260 degrees
- Pixel scale: 1.475 arcsec/pixel
- Orientation: 1.242 degrees
- Field radius: 1.137 degrees
Author: casey
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