NGC 6704 (Lund 864, Cr 390) Open Cluster in Scutum
Located at: RA 18 hours 50 minutes 48 seconds, Dec -05 degrees 12 minutes 00 seconds
Size: 5.0' (6.0'); Magnitude: 9.2; Class: I 2 m
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, 200 minutes (20 x 10 minute subs), 08/17/18/2007 |
| Processing: |
CCDStack 1.2, Photoshop 7.0 |
| Location: |
Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s) |
| Notes: |
This open cluster is almost lost in the rich background of the Scutum Star Cloud ... about 24 minutes NNW (upper right) is the Dark Nebulae complex B 110 and B 107. According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of this open cluster is 6.0 arc minutes. From the NGC / IC Project: Contemporary Visual Observation(s) for NGC 6704 NGC 6704 = Cr 390 = Lund 864 = OCL-82 18 50 45 -05 12.3 V = 9.2; Size 6 17.5": at 220x, 40 stars mag 12-15 are visible over unresolved haze, elongated N-S. Three collinear mag 12.5 stars oriented NNW-SSE are equally spaced near the center. Located 55' N of M11. - by Steve Gottlieb |