400/500mm - 17.5" (7/28/92): fairly faint, moderately large, very elongated 3:1 SW-NE, large brighter middle, fairly low surface brightness. Bracketed by two mag 12.5/13 stars of the southwest end, 1.5' from center, and near the northeast end, 2.0' from center. A mag 15 star is off the southwest extension.