17.5" (7/12/99): at 100x appears fairly bright, round, ~1.6' diameter with a
darker center. I used a variety of magnifications and filters but the most
interesting view was at 220x using a UHC filter. With this combination the PN
is slightly elongated E-W and clearly brighter along the southern rim with the
brightening tapering towards the ends so this brighter portion had a crescent
appearance. Because of this asymmetric rim the darker center seems offset and
only weakly brightens at the NW rim. A mag 13 star is just off the NE edge 1'
from center. (NGC/IC Project)
A very nice surprise in the night
Topic: NGC 6781 Planetary nebula in Aquila (Read 8876 times)
