400/500mm - 17.5" (12/30/99): picked up at 100x as a ghostly streak, ~4'x1' oriented NW-SE with little or no central concentration. This large, low surface brightness edge-one was difficult to view at 220x although could be held steadily with averted vision. Appears ~4.0'x0.8' with a very weak broad concentration. A mag 10.5 star 4' NW is collinear with the major axis. There are several mag 10 stars in the field including one 7' N.