Comet 2009P1 Garradd on Nov 20, 2011


Date & Time: Nov 20 2011, from 17:58 to 18:13 JST(+0900)
Composed 8 shots with 2 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
Auto-guided with TAKAHASHI EM200 Equatorial
Digital Camera: Nikon D700
Location: Hitachi-oota city, Ibaraki pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(2784×1848)
Device Size...DX format (24×16mm)
CCD Sensitivity...ISO1600


The comet 2009P1 Garradd in that day when my first observation in last two months has been positioned at 6.5 degrees northeast of alpha Herculis. The comet has a coma brightness of about 6.5th magnitude, has a short dust tail in east direction and a dimmed ionized tail in northeast direction with its length over 1.5 degrees. You can see that the ion tail has been sticked out of the field of image.



Garradd on early morning of Dec 30, 2011
Garradd on Sep 23, 2011

Copyright(c) 2011 by Naoyuki Kurita, All rights reserved.
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