Comet 2009P1 Garradd on Sep 23, 2011

Date & Time: Sep 23 2011, from 19:22 to 19:38 JST(+0900)
Composed 6 shots with 3 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
Auto-guided with TAKAHASHI JP Equatorial
Digital Camera: Nikon D700
Location: Ooizumi, Hokuto city, Yamanashi pref.

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

The comet 2009P1 Garradd in that day has moved to eastern Hercules. I could detect 7th magnitude coma and a dust tail with length of over 15 arc minutes in east direction, and this image has captured more dimmed tail stretched toward outside of the field.
This image has been trimmed to equivalent focal length of 1000mm.

Garradd on Nov 20, 2011

Garradd on Aug 29, 2011

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