The attached file contains 50 bright planetary nebulae.
I prefer the larger fainter PN rather than small bright ones so there is a bias in my selection.
36 of the 50 PN are between dec +50 and dec -50, 7 are north of dec +50 and 7 south of dec -50.
wikisky.org images with a 14 arcmin field are at
https://picasaweb.google.com/1100488...Jm95-XF98SCggE
Refr Kent Wallace
http://www.blackskies.org/intro.html#Files