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Type: planetary nebula
Mag: B=9.4, V=?
Synonyms: H II-705
Discovered in 1787 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "pB, S, iR, easily resolvable, almost equally bright."
Burnham, S. W. () "Measures of planetary nebulae with the 36-inch equatorial of the Lick Observatory", Pub. Lick Obs., vol 2, p159-167. "There seems to be a faint condensation near the margin of the nebula on the preceding side, but there is no central star; otherwise it presents the true planetary appearance."
Terzian Y (1980) Q.J. R.astr.Soc vol 21, p82-92 [09.16.1] notes that this planetary shows multiple shell structure.
The RNGC (Sulentic and Tifft 1973) notes that this is a 13.0 mag planetary nebula.
NGC 7361 = IC 5237, Cat.of South.Peculiar Gal.and Ass. Vol 2 (Arp&Madore, 1987) p8.22.
Photo Index by Jim Lucyk: Sky&Tel. 6/86 p632.
Marling, J.B. (1986) In pursuit of planetaries. Sky&Telescope, Jun, 631.
Tom Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "12.2M; 28" x 20" extent; soft and small oblong with no center star visible; N-filter helps a lot."
PK: * SSW, W. neb brtr on E&W.
25cm - located at 47x. 180x: mod f, round, diffuse edges. SSW 45" is m13.5 *,
another W at same distance. 30" diam, uniformly br.
30cm - 238x: 1' diam, broad br core w/little outer haze. *s located 30" SW
(m13.5), 1' S (m13.7); direcs confused: W, SE?; seem to recall E,NE!
easily seen; grey.
The Messier objects
The Bennett objects
The Caldwell list
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