PK 171-25.1 (image up-sampled 1.5x)
January 2004/October 2006
FS-128G (ag, ST-4)
ST-10XME LRGB 15 minute subs (2004)
ST-2000XM Lum 15 minute subs (2006)
A 38 arc-second mag 14 planetary nebula.
Note the two bright knots of gas at the outer edge at the 5 and 11 o'clock