NGC 1907 (Lund 179, Cr 66) Open Cluster in Auriga

Located at: RA 05 hours 28 minutes 05 seconds, Dec +35 degrees 19 minutes 30 seconds

Size: 6.0' (5.0') Magnitude: 8.2 Class: I 1 m n

North is up

West to the right

Telescope:

 8" f5 Newtonian reflector

Camera:

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

Image:

Lumicon Deep Sky filter, 180 minutes (18 x 10 minute subs), 01/13/2008; seeing 3.2-4.2 FWHM per CCDStack

Processing:

CCDStack 1.3.2, Photoshop 7.0

Location:

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

Notes:

This image replaces an 180 minute sequence from 12/14/2007 (re-shot for better collimation), and an initial 60 minute Track and Accumulate image; still needs more time for background nebulosity.

See the 14.5" version.

According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of this open cluster is 5.0 arc minutes.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 1907

NGC 1907 = Cr 66 = Mel 35 = OCL-434
05 28 05 +35 19.5
V = 8.2;  Size 7

17.5": 50 stars in a 7' diameter.  Includes a few bright stars but very rich in 
fainter stars in the central region.  A wide pair of mag 9.5-10 stars is at the 
S end (9.6/9.9 at 52") and a closer pair is off the NE side (h699 = 10.4/11.6 at 
10")

13": dense, about three dozen stars.

8": rich, glowing cluster, compact, includes two bright stars to the south.

- by Steve Gottlieb