Comet 2005A1 LINEAR on Jan 21, 2005


Date & Time: Jan 21 2005, from 29:11 to 29:30 JST(+0900)
Composed 4 shots with 5 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Fujifilm FinePix S2 Pro
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...12bit CCD-RAW, converted to 16bit TIFF(3024×2016)
CCD Sensitivity...ISO1600, White Balance...Auto


This image shows you the comet 2005A1 LINEAR only a week later from its discovery. The comet is positioned in tail of Hydra, has a coma with a brightness of only 13th magnitude. But you can detect a dimmed blue greenish head and a short tail in northwest direction with a length of 3 arc minutes or so. The comet will be brightened from this time on but move to southern hemisphere. It will be impossible to observe the comet on and after this Feb.


2003T4 LINEAR on Dec 11, 2004
Tsuchinshan1 on Jan 21, 2005

Copyright(c) 2005 by Naoyuki Kurita, All rights reserved.
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