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.

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