NGC 4605 (UGC 7831) Galaxy in Ursa Major

Located at: RA 12 hours 40 minutes 00 seconds, Dec +61 degrees 36 minutes 39 seconds

Size: 5.7' x 2.1' Magnitude: 10.9 blue Class: SB(s)c pec HII

North is up

West to the right

Telescope:

 14.5" f5 Newtonian reflector

Camera:

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

Image:

Lumicon Red filter, 390 minutes (39 x 10 minute subs), 03/17/18/26/2016; seeing 2.1-3.9 FWHM per CCDStack

Processing:

CCDStack 2.91.5875.24618, Photoshop CS5.1

Location:

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

Notes:

Managed one more set of subs (26th) taken in clear skies, and with less moon (and farther away) than the first 32 subs ... ended up tossing the subs with the worst gradients, but had to use subs with worst seeing.

Same issues imaging this galaxy as the previous galaxy (NGC 3953) ... hazy skies, brightening moon, and periods of thin high clouds ... only the moon was brighter and nearer! Really bad gradients ...

From the NGC / IC Project:

Contemporary/Current Data for  NGC 4605
Right Ascension (2000):  12h 40m 00.0s Declination (2000):  +61 36' 28"
Object Type:  Galaxy Object Classification:  SBc/P
Constellation:  Ursa Major Position Angle:  125
Visual Magnitude:  10.4 Surface Brightness:  13.0
Blue Magnitude:  10.9 Object Size:  5.5'X2.3'
Also Cataloged As:   UGC 7831, MCG+10-18-074, H I-254, h 1381, GC 3142,
CGCG 293.031, KARA 543, IRAS 12378+6152, PGC 42408
Catalogue Notes:  Peculiar.

**** Online site has the visual description/information for NGC 4606!

Contemporary Visual Observation(s) for NGC 4605
NGC 4606 = UGC 07839 = MCG +02-32-174 = CGCG 070-213 = PGC 42516
12 40 57.5 +11 54 41
V = 11.8;  Size 3.2x1.6;  SB = 13.5;  PA = 33d

17.5": fairly faint, very elongated SW-NE.  A mag 13.5 star is superimposed on 
the SSW end 0.5' from center and a mag 14 star is at the SSW edge 1.1' from 
center.  Forms a pair with N4607 3.8' ESE.

13": faint, small, very elongated SSW-NNE.  Two stars are at the S edge.  
Located 20' NW of M59.

- by Steve Gottlieb