NGC 6826 Blinking Planetary
Cygnus
Penryn, California
May 2005
M 250 @ f9.3 (ag, ST-4)
ST-10XME LRGB 30 seconds each
A 25 arc-second mag.9.2 planetary. Note
the lobes at the 2 and 8 o-clock positions.
Called the blinking nebula because of a
tendency to disappear when switching from averted vision to direct vision while
observing the nebula.