M3
NGC 5272
Constellation: CVn
Dreyer description: Very remarkable!, globular cluster, extremely bright,
very large, very abruptly much brighter middle, stars of magnitude 11 and
fainter
Magnitude: 6.4
RA: 13h 42m 12.0s Dec: +28°23'00" (Epoch 2000)
Size:16.2'
Exposure Information
Detector: MX716
Exposure Time: 12 minutes
Instrument: 10" f4.5 reflector
Filters: Infrared Blocker for luminance, Red, Green and Blue,
Astronomik TypeII