M 80 (NGC 6093, GCL 39) Globular Cluster in Scorpius

Located at: RA 16 hours 17 minutes 03 seconds, Dec -22 degrees 58 minutes 30 seconds

Size: 10' Magnitude: 7.3 Class: 2

North is up

West to the right

Telescope:

8" f5 Newtonian reflector

Camera:

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

Image:

 Lumicon Deep Sky filter, 300 minutes (30 x 10 minute subs), 07/16/17/18/2007

Processing:

CCDStack 1.2, Photoshop CS5.1

Location:

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

Notes:

This image replaces a 100 minute red-filtered sequence from 07/14/2006. See the 14.5" version.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 6093

NGC 6093 = M80 = E516-SC11
16 17 02.5 -22 58 30
V = 7.3;  Size 8.9

17.5" (6/3/00): fairly bright, round, 5' diameter, well-concentrated with a 
bright 1.5' core and an intense 30" nucleus.  At 500x, the nucleus is clearly 
offset east of center and the outer halo is well resolved into at least 75 
stars.  A dim galaxy, IC 4596, lies 25' NW.

13": contains a small intense unresolved core surrounded by fairly compact halo 
5' diameter.  The nucleus is offset to the the east within the halo.  The outer 
shell resolves into a few dozen faint stars over haze.

8": few faint stars resolved at moderate to high power at edges, very grainy, 
difficult to resolve.

- by Steve Gottlieb