NGC 6210 (PK 43+37.1) Planetary Nebula in Hercules

Located at: RA 16 hours 44 minutes 30 seconds, Dec +23 degrees 47 minutes 58 seconds

Size: 30" Magnitude: 9.3 photographic Class: 2+3b

North is up

West to the right

Telescope:

 14.5" f5 Newtonian reflector

Camera:

 ST-8XME, self-guided, binned 1x1, temp -20c, camera control MaxIm DL 4.56

Image:

Lumicon Red filter, 150 minutes (50 x 3 minute {180 seconds} subs), 06/18/2013; seeing 2.9-4.1 FWHM per CCDStack

Processing:

CCDStack 2.69.4870.18821, Photoshop CS5.1

Location:

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

Notes: I imaged two small planetary nebulae in Hercules (also see NGC 6058) while waiting for the waxing moon to clear the area around NGC 4559.

View 200% crop.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 6210
NGC 6210 = PK 43+37.1 = ?5 = PN G043.1+37.7
16 44 29.4 +23 48 00
V = 8.8;  Size 20"x13"

17.5" (5/27/00): beautiful bluish oval at 220x, elongated 4:3 E-W, 0.4'x0.3'.  
At 380x, there appears to be a very small fainter halo.  At 500x, the narrow 
outer envelope is more evident and is elongated in the direction of the major 
axis, increasing the size to ~30"x20".

17.5": very bright, small blue oval 20"x15" with an unusually high surface 
brightness.  At 572x, a fainter outer envelope is suspected.  An evenly matched 
close double star ?2094 = 7.4/7.7 at 1.3" lies 17' SSW.

13": very bright, extremely high surface brightness, blue, takes very high 
power.  Mag 12.5 central star not seen.

- by Steve Gottlieb