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Type: planetary nebula
Mag: B=17, V=?
Discovered in 1794 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "vF, easily resolvable."
The RNGC (Sulentic and Tifft 1973) notes that this is a diffuse nebula. Their coded description reads PLN),R,VDIF,B F SIDE.
Observer: Lew Gramer; Your skills: Intermediate; Date and UT of Observation: 1997-07-31/08-01, 06:20 UT; Location: Savoy, MA, USA (42N, elev 700m); Site classification: rural; Limiting magnitude: 7.2 (zenith); Seeing: 7 of 10 - pretty good, intermittent haze; Moon up: no; Instrument: 20" f/5 Tectron truss-tube dob Newtonian reflector; Magnification: 70x, 210x; Filters used: None, UHC, OIII; Object: ngc7076; Category: Emission nebula;
Description: This little emission nebula was easily found from alpha Cep, by sweeping about 1o ENE to a nice elongated triangle of stars that pointed S, of mags. 7, 8, and 9 clockwise from the W star. Near the mag. 7 star at the W vertex of the triangle, n7076 was picked out with averted vision as a slightly elongated (NW-SE) smudge, brighter to the N, with a narrower center, and a S "lobe" which was oriented more ESE. Best when viewed WITHOUT an OIII, but the view was essentially the same with a UHC as without a filter.
15cm - pretty f @ 80x, ident certain however w/[OIII]. 140x: maybe 10" diam.
circ, poss annular. three m14 *s in line to N, farther one is pair.
neb vis @ 50x w/[OIII]. BS, 8Sep1991, Anderson Mesa.
The Messier objects
The Bennett objects
The Caldwell list
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