NGC 6643 (UGC 11218) Galaxy in Draco

Located at: RA 18 hours 19 minutes 46 seconds, Dec +74 degrees 34 minutes 10 seconds

Size: 3.8' x 1.9' Magnitude: 11.7 blue Class: SA(rs)c

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, 480 minutes (48 x 10 minute subs), 05/29/30 & 06/1/2015; seeing 2.2-3.7 FWHM per CCDStack

Processing:

CCDStack 2.90.5589.16047, Photoshop CS5.1

Location:

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

Notes: As usual, keeping away from the moon by imaging towards the north.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 6643
NGC 6643 = UGC 11218 = MCG +12-17-021 = CGCG 340-043
18 19 46.6 +74 34 08
V = 11.1;  Size 3.8x1.9;  SB = 13.1;  PA = 38d

17.5": fairly bright, large, oval 2:1 SW-NE, broadly concentrated halo.  Forms 
the E vertex of a triangle with two mag 11.5 stars 1.6' NW and 2.0' W.  Also a 
mag 15 star is off the W edge 1.4' from center.

8": faint, diffuse, elongated SW-NE.  Two mag 12 stars are at the W edge.

- by Steve Gottlieb