IC 417 (Sh2-234) / Stock 8 (Lund 178, OCL-436) Emission Nebula / Open Cluster in Auriga

Located at: RA 05 hours 28 minutes 17 seconds, Dec +34 degrees 25 minutes 00 seconds

Size: 13' x 8.5' / 5.0' (15') Magnitude: -- / -- Class: Emission (Sharpless) 3 2 3 / I 3 m n

North is up

West to the right


 14.5" f5 Newtonian reflector


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


Lumicon Red filter, 870 minutes (87 x 10 minute subs), 01/5/6/9/10/2014; seeing 2.7-5.2 FWHM per CCDStack


CCDStack 2.76.5115.24309, Photoshop CS5.1


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


Another object imaged in this "winter's" highly variable conditions. High clouds (still no rain; 1 inch since1 July), and winds (poor seeing generally in the wind), and a waxing moon (68-77%) within 30-40 degrees the last two days.

The IC 417 nebula surrounds, and trails to the east (left) of open cluster Stock 8, which is the dense group of stars to the east (left) of the bright 5.1 magnitude star near the center (Phi Aurigae, 24 Aur, 5.1 mag). The N-S 'fan' from the bright star is caused by the Lumicon filter. See the 8" version.

According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of open cluster Stock 8 is 15 arc minutes.

From the NGC / IC Project:

NO Contemporary Visual Observation(s) for IC 417