This image of NGC6539 is a 3 minute exposure taken on March 24, 2001 with my Ritchey-Chretien 12.5 inch F/7.25 telescope, with a SBIG ST-8 and the AO-7 Adaptive Optics. I put a Astrophysics .75 focal reducer on the scope before I took this image.
RA (2000)
18h, 04m, 48.0s
DEC (2000)
-07°, 35', 00"
Magnitude
9.6
Size
6.9 arc min
Constellation
Serpens Cauda
Other Name
GC 4370
Distance
7,500 Light Years
Radial Velocity
Unknown
Object Type
Type 10 Globular Cluster
Notes:
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