sponsored by psychohistorian.org
RA: 17h 01m 33.57s
Dec: −21° 49′ 32.8″
Ch: MSA:1395, U2:337, SA:22
Type: planetary nebula
Mag: B=12.3, V=9.5
Tom Lorenzin, in the electronic version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "12M; 20" x 10" extent; soft, fuzzy ellipse surrounds 14M star; not a disc! TOUGH! use >200x; GLOB N6287 is 70' to SE."
Steve Coe, in "SACNEWS On-line for July 1996", using a 13-inch reflector, notes: "IC 4634 is a pretty bright, but extremely small planetary. This elongated, greenish dot is floating in a very nice Milky Way field at 17 hr 01.6 min and -21 50. Averted vision makes it grow to about three times the size of the Airy disk in my 13" at 330X.
Steve Coe, using a 13" f/5.6, notes: "Pretty bright, extremely small planetary. It is somewhat elongated. This greenish dot is floating in a very nice Milky Way field. Averted vision makes it grow to about three times the Airy disk."
Observing site: Little Tycho Observatory
[17h 1m 36s, -21° 50' 0"] A small, round spot in the sky, well seen despite the light pollution and the dusk.
16-inch f/10 SCT (127x 290x 462x)
Very much an icy blue dot. I use averted vision and it pops out to the brightest object in the field. The use of a 0111 (oxygen filter) brings out the planetary as a distant frosted globe.
The Messier objects
The Bennett objects
The Caldwell list
DOCdb is still in beta-release.
Known issues, feature requests, and updates on bug fixes, are here:
Found a bug? Have a comment or suggestion to improve DOCdb? Please let us know!
DOCdb is a free online resource that exists to promote deep sky observing.
You could help by sharing your observations, writing an article, digitizing and proof-reading historical material, and more.
Everything on DOCdb.net is © 2004-2010 by Auke Slotegraaf, unless stated otherwise or if you can prove you have divine permission to use it. Before using material published here, please consult the Creative Commons Attribution-Non-Commercial-Share Alike 2.5 License. Some material on DOCdb is copyright the individual authors. If in doubt, don't reproduce. And that goes for having children, too. Please note that the recommended browser for DOCdb is Firefox 3.x. You may also get good results with K-Meleon. Good luck if you're using IE. A successful experience with other browsers, including Opera and Safari, may vary.