NGC 6517 (GCL 81) Globular Cluster in Ophiuchus   

Located at: RA 18 hours 01 minutes 51 seconds, Dec -08 degrees 57 minutes 32 seconds

Size: 4.0' Magnitude: 10.1 Class: 4

North is up

West to the right

Telescope:

 14.5" f5 Newtonian reflector

Camera:

 ST-8XME, self-guided, binned 1x1, temp -15c, camera control MaxIm DL 4.56

Image:

 Lumicon Red filter, 370 minutes (37 x 10 minute subs), 08/4/7/2015; seeing 2.4-5.2 FWHM per CCDStack

Processing:

CCDStack 2.90.5589.16047, Photoshop CS5.1

Location:

 Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)

Notes:

Taking advantage of evening clear skies (before the marine stratus moves in) to image some southern objects ...

From the NGC/IC Project:

Contemporary Visual Observation(s) for NGC 6517
NGC 6517
18 01 50.5 -08 57 32
V = 10.3;  Size 4.3

17.5" (6/8/91): fairly faint, small, irregularly round, 2' diameter.  No 
resolution at 280x.  The faint halo is slightly elongated SSW-NNE and increases 
to a small bright core.

8": faint, small, brighter core, no resolution.

- by Steve Gottlieb