M28 Globular Star Cluster


M28 Globular Star Cluster

M28 is a 6.9 magnitude globular star cluster in Sagittarius. M28 was discovered by Charles Messier in July 1764. This is a compact globular cluster that appears merely as a fuzzy ball unless viewed with a telescope 10-inches or larger. This object was first resolved into stars by William Herschel. M28 is located only 3 degrees away from the spectacular globular cluster M22, and therefore suffers by comparison. M28 is about 15,000 light-years away and about 65 light-years in diameter.

This is a composite RGB CCD image taken with a Takahashi FCT-150 telescope. The CCD camera was an SBIG ST-8XE using a CFW-8 color filter wheel. This image was taken from my backyard in Scottsdale, Arizona.

M28 (NGC 6626).
Constellation: Sagittarius
RA: 18h 24m 56s Dec: -24d 52' 05"
April 8, 2006
Image by Sid Leach
Scottsdale, Arizona

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