IPHASX J200018+365934 also known as NeVe 2, is a planetary nebula
candidate in the heart of Cygnus. The brilliant star that made
processing this a nightmare is 25 Cygni, a B3IV 5th magnitude star. The
image is so star-filled I couldn't get it below 1 meg in size. Finding
the planetary candidate is almost a "Where's Waldo" challenge.
Fortunately it is 30" in size and not star-like. I see no central star
but the blue disk with a red outer ring is sometimes seen in
planetaries. It's hard to see it as anything else to my eye.
This one was brought up last July by a forum post asking what it was?
Once I figured it out I added it to my short list of objects. Like most
nights last summer neither seeing or transparency were very good but it
was registering so I just gave it double my standard exposure time to
make up for the horrid transparency. The first reference to it as a
possible planetary nebula was in the Strasbourg-ESO Catalogue of
Galactic Planetary Nebulae Strasbourg-ESO Catalogue of Galactic
Planetary Nebulae in 1992. Then again in 2009 in this paper:
http://adsabs.harvard.edu/abs/2009A%26A...504..291V . Apparently no
definite answer to its nature is known as yet. It's one of several
hundred such nebula. An imaging task I doubt I'll undertake, I have too
many on the to-do list as it is.
14" LX200R @ f/10, L=8x10' RGB=2x10', STL-11000XM, Paramount ME
Rick
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