M56 - Globular Cluster in Lyra

M56

M56 - Globular Cluster in Lyra
Mag 8.3, 8.8 arcminutes across
RA 19:17 Dec 30 12'
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This from SEDS.ORG:

Discovered by Charles Messier in 1779.

M56 is located about half-way between Beta Cygni (Albireo) and Gamma Lyrae. It is one of the less bright Messier globulars, especially lacking the bright core which most globulars have. Nevertheless it is not too difficult to resolve, even at its rather large distance. At its distance of 32,900 light-years. its diameter of 8.8 arc minutes corresponds to a linear extension of about 85 light years. Visually, only about the inner third of this great ball, of about 3' diameter is visible.

This stellar swarm is approaching us at the high velocity of 145 km/sec.

M56 was one of Charles Messier's original discoveries; he saw it first on January 23, 1779 and describes it as a "nebula without stars," like most globular clusters. It was first resolved into stars by William Herschel around 1784.

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ST-10XME with Tak FSQ
Astrodon RGB filter set
4 x 5 minutes Red, 4 x 5 min Green and 4 x 5 minutes Blue
Flesherton, Ontario, Canada
Oct 8, 2006
Ambient temp +10C; camera temp -20C; Moon just past full
Images acquired, aligned and darks & flats applied in CCDSoft v5.0
Images debloomed and combined in Maxim
Colour channels assembled in PS CS2.
Levels, High Pass Filter and saturation boost in PS CS2

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