M 90 (NGC 4569, Arp 76) Galaxy in Virgo

Located at: RA 12 hours 36 minutes 50 seconds, Dec +13 degrees 09 minutes 48 seconds

Size: 9.6' x 4.3' Magnitude: 10.3 blue Class: SAB(rs)ab

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, 450 minutes (45 x 10 minute subs), 06/4/5/2013*; seeing 2.8-3.4 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 finally have given up trying for more exposure on M 90 ... We have had a very aggressive marine layer (fog) this past week. The 45 subs for this image were taken on 7 separate nights. On two nights I was only able to get in one sub (near the end of nautical twilight) before the fog came in, another two nights I was able to get in two subs, and in only two nights did I get a full night (17 and 18 subs). See the 8" version.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 4569

NGC 4569 = M90 = U07786 = MCG +02-32-155 = CGCG 070-192 = Arp 76 = PGC 42089
12 36 49.9 +13 09 44
V = 9.5;  Size 9.5x4.4;  SB = 13.4;  PA = 23d

17.5": bright, large, very elongated 3:1 SSW-NNE, sharp concentration as 
suddenly increases to a bright stellar nucleus (possibly a superimposed star), 
fairly even surface brightness to halo.  IC 3583 lies 6' NNW.

- by Steve Gottlieb