M 2, 



    
        

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M 2

Technical card

Imaging telescopes or lenses: 8" SCT GT Series Celestron

Imaging cameras: 450 Rebel Canon

Mounts: CG5 Equatorial Celestron

Focal reducers: 6.3 Focal reducer Celestron

Software: 3.3.3 Beta 47, 3.82 and CS3 Deep Sky Stacker, Image Plus, Photoshop & Noel's Tools,


Dates:Oct. 10, 2010

Frames:
5x38" (3' 10") ISO1600
7x38" (4' 26") ISO400
10x38" (6' 20") ISO800

Integration: 13' 56"

Avg. Moon age: 3.03 days

Avg. Moon phase: 10.05%

Bortle Dark-Sky Scale: 5.00


Basic astrometry details

Astrometry.net job: 111107


Resolution: 700x550

Description

M2 ( also known as NGC 7089 ) is located in constellation Aquaris about 37,500-50,000 light years away from earth. It contains about 150,000 stars and is one of the richer and more compact globular clusters. It was discovered by Maraldi on Septemberr 11, 1746. Charles Messier independently rediscovered and cataloged it exactly 14 years later, on September 11, 1760, as a "nebula without stars." William Herschel was the first to resolve it into stars.

Comments

Histogram

M 2, 



    
        

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