Comet 2007Q3 Siding Spring on early morning of Dec 27, 2009

Date & Time: Dec 26 2009, from 26:51 to 27:21 JST(+0900)
Composed 4 shots with 10 minutes exposed
Optical: Meade 25cm(10") Schmidt Cassegrain with a conversion lens (f=1760mm, F7.1)
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Nikon D50 (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...12bit CCD-RAW, converted to 16bit TIFF(3008 x 2000)
CCD Sensitivity...ISO1600

The comet Siding Spring in that day has just moved from Coma Berenices to Bootes, I could observe a 9th magnitude coma and a dust tail in west direction almost same with that in previous week. But it was bad transparency condition, could not detect ionized composition surrounding the coma.

Siding Spring on early morning of Jan 11, 2010

Siding Spring on early morning of Dec 20, 2009

Copyright(c) 2009 by Naoyuki Kurita, All rights reserved.
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