NGC 6751 (PK 29-5.1) Planetary Nebula in Aquila

Located at: RA 19 hours 05 minutes 56 seconds, Dec -05 degrees 59 minutes 33 seconds

Size: 26" Magnitude: 12.5 photographic Class: 3

North is up

West to the right

Telescope:

 14.5" f5 Newtonian reflector

Camera:

 ST-8XME, self-guided, binned 1x1, temp -10c, camera control MaxIm DL 4.56

Image:

Lumicon Red filter, 75 minutes (100 x 0.75 minute {45 seconds} subs), 09/15/2014; seeing 2.3-3.2 FWHM per CCDStack

Processing:

CCDStack 2.81.5337.19441, Photoshop CS5.1

Location:

 Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)

Notes: As with past high surface brightness planetaries, I used the best (seeing) 100 subs (out of a total of 136 for this one) for this image.

View 200% crop.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 6751
NGC 6751 = PK 29-5.1 = PN G029.2-05.9
19 05 55.4 -05 59 32
V = 11.5;  Size 21"

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 N 
side or the rim is irregularly brighter along the N 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.  The planetary is 
bracketed by two stars just off the east and west edge (fainter star is at the 
preceding side).  Situated in a rich milky way star field.

13": fairly faint, small, round.  The mag 15 central star is suspected at high 
power.  A mag 13.5 star is right at the E 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).

- by Steve Gottlieb