M 107 (NGC 6171) Globular Cluster in Ophiuchus
Located at: RA 16 hours 32 minutes 32 seconds, Dec -13 degrees 03 minutes 13 seconds
Size: 13'; Magnitude: 7.8; Class: 10
North is up
West to the right
| Telescope: |
8" f5 Newtonian reflector |
| Camera: |
ST-8XME, self-guided, binned 1x1, temp -10c, camera control MaxIm DL 4.53 |
| Image: |
Red (Hoya 25A) filter, 250 minutes (25 x 10 minute subs), 06/17/2006 |
| Processing: |
CCDStack 1.2, Photoshop 7.0 |
| Location: |
Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s) |
| Notes: |
From the the
NGC / IC Project: Contemporary Visual Observation(s) for NGC 6171 NGC 6171 = M107 16 32 31.9 -13 03 13 V = 8.1; Size 13 17.5" (7/10/99): this bright globular was well resolved at 220x, with a ~5'x3' halo elongated in an E-W orientation although the sharply defined core is circular and ~2' in diameter. Enclosing the globular on the west, east and south sides are brighter mag 11.5-12.5 stars. Roughly 30 stars are scattered throughout the outer halo at 280x and a couple of dozen densely packed stars overlay the core of the globular in steady moments. 13": bright core with several faint stars resolved in the halo and a few stars resolved at the edge of the core. 8": bright core, fainter halo, mottled, a few stars are visible at the NW edge. - by Steve Gottlieb |