M 91 (NGC 4548) Galaxy in Coma Berenices

Located at: RA 12 hours 35 minutes 26 seconds, Dec +14 degrees 29 minutes 49 seconds

Size: 5.4' x 4.2' Magnitude: 11.0 blue Class: SB(rs)b (SBb(rs))*

North is up

West to the right

Telescope:

 8" f5 Newtonian reflector

Camera:

  ST-8XME, self-guided, binned 1x1, temp -25c, camera control MaxIm DL 4.56

Image:

Lumicon Red filter, 480 minutes  (48 x 10 minute subs), 05/25/26/ & 06/16/17/2009; seeing 2.4-3.6 FWHM per CCDStack

Processing:

CCDStack 1.6.0.3, Photoshop CS 5.1

Location:

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

Notes:* See the image with the first 240 minutes of data taken 05/25/26 ... See the 14.5" version.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 4548

NGC 4548 = M91 = U07753 = MCG +03-32-075 = CGCG 099-096 = PGC 41934
12 35 26.4 +14 29 47
V = 10.2;  Size 5.4x4.3;  SB = 13.4;  PA = 150d

17.5": bright, moderately large, elongated 3:2 SW-NE, 3'x2', gradually increases 
to a bright core and a very small nucleus.  M88 is 50' WSW.

- by Steve Gottlieb
* NED data.