NGC 3953 (UGC 6870) Galaxy in Ursa Major

Located at: RA 11 hours 53 minutes 49 seconds, Dec +52 degrees 19 minutes 36 seconds

Size: 6.9' x 3.4' Magnitude: 10.8 blue Class: SB(r)bc HII

North is up

West to the right

Telescope:

 8" f5 Newtonian reflector

Camera:

 ST-8XME, self-guided, binned 1x1, temp -15c & -20c, camera control MaxIm DL 4.56

Image:

Lumicon Red filter, 720 minutes (72 x 10 minute subs), 03/12/17/28/31 & 04/1/2011; seeing 2.9-3.9 FWHM per CCDStack

Processing:

CCDStack 2.23.4089.23029, Photoshop 7.0

Location:

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

Notes:

Had a tough time getting enough exposure on this object ... between the the time change, hazy moonlit skies and clouds, finally got enough for this image. Also see the NGC 3917 group, just 39 minutes WSW ... UGC 6840 (2.3' x 1.9'; mag 14.3b, Cl: SB(rs)m) is at the WSW (lower right) of this image, and is also in the NGC 3917 group image. See the 14.5" version.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 3953

NGC 3953 = UGC 06870 = MCG +09-20-026 = CGCG 269-013 = PGC 37306
11 53 48.8 +52 19 35
V = 10.1;  Size 6.9x3.5;  SB = 13.4;  PA = 13d

17.5": very bright, very large, elongated ~N-S, 5'x2', very bright core, stellar 
nucleus.  A mag 13 star is at the W edge 0.9' from the center and a brighter mag 
11 star is off the NE side 2.7' from center.  Visible in 16x80 finder.

- by Steve Gottlieb