M 21 (NGC 6531) Open Cluster in Sagittarius
Located at: RA 18 hours 04 minutes 13 seconds, Dec -22 degrees 39 minutes 51 seconds
Size: 13'; Magnitude: 5.9; Class: I 3 r
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 4.56 |
| Image: |
Lumicon Deep Sky filter, 150 minutes (15 x 10 minute subs), 09/1/2007 |
| Processing: |
CCDStack 1.3, Photoshop 7.0 |
| Location: |
Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s) |