Object: Abell 31
Obs. place: Base del Teide, Tenerife, Spain (7480ft)
NE Lim. mag: 7.1m
Background sky: 1-2
Weather: Excellent, very cold
Description: Extremely faint, very large planetary about 8' x 8' in
size and extremely close of being just O-III nebulosity - just a barely brighter
patch in the background sky. Flanked two 10th magnitude stars, almost surrounding
the eastern one. The disk is almost even brightness.
Notes: N up. Original sketch.
Abell 31 with 3" Konus @ 64x + O-III