NGC/IC Project Restoration Effort

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NGC6751

 

Basic Information


Location and Magnitude


Right Ascension: 19:5:55.5
Declination: -5:59:30
Constellation: AQL
Visual Magnitude: 11.9

Historic Information


Discoverer: Marth
Year of discovery: 1863
Discovery aperture: 48.0

Observational


Summary description: pB, S
Sub-type: PN

Corwin's Notes

===== NGC 6751 is also NGC 6748, which see.

Steve's Notes

===== NGC 6751 24" (9/30/16): symmetric, very attractive planetary at 450x (unfiltered). The edge of the 20" rim is crisply defined. The mag 14.5 central star is easily visible. Annularity is evident with a brighter rim except for a section of the south edge. The center is slightly darker around the central star. In a rich star field with carbon star V Aql 30' NW. 18" (8/26/06): excellent view at 257x. The central star was easily seen and the rim appeared brighter with the center slightly darker. There also appeared to be a thin outer shell. A mag 14.5 star is close off the east edge and two mag 14/15 stars off the west side. At 435x, the planetary is perhaps slightly elongated ~E-W and one or extremely faint stars occasionally sparkle, with one possibly on the west edge. The stunning carbon star V Aql is in the same low power field 30' NW and dark nebula B134 lies 20' SE. 18" (7/19/04): at 322x, this is a beautiful 20" fairly bright disc with an easy mag 14.5 central star. At 435x, the surface brightness is irregular and there is an impression that an extremely faint star or knot is superimposed on the north side or perhaps the rim is irregularly brighter along the north side. The planetary is bracketed by two stars just off the leading and trailing sides. 18" (9/20/03): moderately bright, round, 20" planetary. Excellent view at 435x; the halo has a subtle irregular surface brightness and seems slightly fainter near the center and it also appears to fade slightly at the edge of the halo. The mag 14.5 central star shines steadily. Situated in a rich star field with a mag 13.5 star at the east edge with fainter stars off the west side. The dark nebula B134 lies 20' SE and the deep red variable V Aquilae in 30' NW. 17.5" (6/3/00): fairly faint, small, round, 20" diameter. At 500x, the surface brightness is uneven and the planetary appears darker on the SE side of the center. The mag 14.5 central star is obvious at 500x. Two stars just off the east and west edge (fainter star is at the preceding side) bracket the planetary. Situated in a rich Milky Way star field. 13.1" (8/16/81): fairly faint, small, round. The mag 15 central star is suspected at high power. A mag 13.5 star is right at the east edge and a mag 12.5 is 55" ESE of center. Located 30' SE of the striking deep red variable V Aquilae (6.6-8.4).