NGC/IC Project Restoration Effort

===== NGC 6838 = M 71. I had speculated earlier that this might also be NGC 6839, which see, but Steve Gottlieb has found that it is certainly not. WH recorded both objects in the same sweep.

===== NGC 6838 24" (9/2/16): at 200x and 375x; beautifully rich cluster mostly defined by an intense triangular central or core region with vertices on the north, southwest and southeast corners and sides ~3', 3', 2.3'. Roughly 100 stars are densely packed over background glow within this triangular outline, though the north end is less well defined. The surface brightness falls off rapidly outside the core, though the halo includes some brighter stars, and the cluster blends into the fairly rich field density after a diameter of 5'. 17.5" (8/5/94): roughly 75 stars resolved in a 5' diameter but has a very irregular ill-defined outline to the halo. The brightest section is elongated SSW-NNE with dimensions 3'x2'. The brightest star is on the east side of the core and is a close double. Located in a rich field with likely many field stars superimposed around the halo. Located just south of the midpoint between Gamma and Delta Sagittae. 13" (7/16/82 and 8/22/87): a few dozen stars are resolved over haze, only weakly concentrated, non-symmetrical shape. Impression that many faint field stars may be superimposed. Located in a very rich star field. 8" (10/4/80): many faint stars were resolved with averted. The west edge is brighter. Open cluster H20 lies 40' SSW. 15x50mm IS binoculars (6/19/09): bright, obvious glow is elongated with a brighter center.