Subject: Comet 17P Holmes
Author: Dennis Stayer
Scope: ZenithStar 66 SD Doublet APO
Instruments: Canon Digital Rebel
Exposure time: 6 exposure, 5 sec, 10 sec, 15 sec, 30 sec, 1 min & 2 min, ISO 800
Place & Seeing: Moorpark, California
Date: October 31, 2007
Remarks: The attached image is a composite of 6 images taken of Comet 17P Holmes on October 31, 2007 using a Canon Digital Rebel at 800 ISO. No filters were used and the exposures of 5 sec, 10 sec, 15 sec, 30 sec, 1 min & 2 min were combined (with dark frames) using Deepsky Stacker. Observing conditions were poor to moderate, the moon low in the sky had a good deal of moisture to reduce sky contrast.