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Contains:  M 14, NGC 6402
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Messier 14, 





    
        

            Lawrence E. Hazel
Messier 14

Messier 14

Technical card

Resolution: 1612x2049

Dates:June 4, 2018

Frames: 10x300"

Integration: 0.8 hours

Avg. Moon age: 20.09 days

Avg. Moon phase: 71.19%

Astrometry.net job: 2091482

RA center: 264.404 degrees

DEC center: -3.208 degrees

Pixel scale: 1.987 arcsec/pixel

Orientation: 173.928 degrees

Field radius: 0.719 degrees

Locations: my backyard, Lake Placid, Florida, United States

Data source: Backyard

Description

Messier 14 (also known as M14 or NGC 6402) is a globular cluster in the constellation Ophiuchus. It was discovered by Charles Messier in 1764.
At a distance of about 30,000 light-years, M14 contains several hundred thousand stars. At an apparent magnitude of +7.6 it can be easily observed with binoculars. Medium-sized telescopes will show some hint of the individual stars of which the brightest is of magnitude +14.
The total luminosity of M14 is in the order of 400,000 times that of the Sun corresponding to an absolute magnitude of -9.12. The shape of the cluster is decidedly elongated. M14 is about 100 light-years across.
A total of 70 variable stars are known in M14, many of the W Virginis variety common in globular clusters. In 1938, a nova appeared, although this was not discovered until photographic plates from that time were studied in 1964. It is estimated that the nova reached a maximum brightness of magnitude +9.2, over five times brighter than the brightest 'normal' star in the cluster.
from Wikipedia

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HazelLE
Lawrence E. Hazel
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Messier 14, 





    
        

            Lawrence E. Hazel