NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC6809
![](Images/negative_NGC6809-ngcicproject.jpg)
Basic Information
Location and Magnitude
Right Ascension: 19:39:59.4
Declination: -30:57:42
Constellation: SGR
Visual Magnitude: 6.3
Historic Information
Discoverer: Lacaille
Year of discovery: 1751
Discovery aperture: 0.5
Observational
Summary description: globular, pB, L, R, vRi, vgbM, st 12…15
Sub-type: XI
Steve's Notes
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NGC 6809
24" (9/2/16): at 200x; superb, very highly resolved showpiece globular of several hundred stars, spreading out at least 15' in diameter. Contains a very large, very bright core that is uniformly covered with similar, relatively bright resolved stars. The core has a loose appearance and doesn't increase to a nuclear peak. The central portion has a distinct 3-dimensional appearance with the brighter stars overlaying a second dense layer of fainter stars against an unresolved background glow. The halo is very large and well resolved with a mix of brighter and fainter stars. The periphery of the halo is irregular or scraggly, but roughly symmetrical.
17.5" (7/14/99): at 100x this a beautiful, highly resolved cluster with outliers extending out to at least 12' in diameter. At 220x, there is uniform covering of easily resolved stars across the halo and the broadly concentrated core. In addition the central region is contains a layer of very faint stars over unresolved haze. The star density drops off rapidly in the outer halo and becomes very scraggly around the periphery. The core also seems indented on the SE side with a void in the halo on this edge.
13" (9/3/83): bright, large, superb resolution of at least 75 stars mag 12 and fainter. Loosely compressed with a broadly brighter core, irregular background glow. One of the easiest resolved globulars.
8": at 100x; faint stars resolved across entire disc, no compact core, over unresolved haze. Highly resolved at 165x.