Comet 2009P1 Garradd on Aug 29, 2011


Date & Time: Aug 29 2011, from 22:17 to 22:34 JST(+0900)
Composed 6 shots with 3 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Camera: Nikon D700
Location: Hitachi-oota city, Ibaraki 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 Sagitta & comet Garradd

Date & Time: Aug 29 2011, from 22:21 to 22:38 JST(+0900)
Composed 5 shots with 4 minutes exposed
Optical: AF zoom-Nikkor 80-200mm F2.8D (f=135mm, F2.8)
with IDAS LPS-P2-FF Light-pollution suppression filter
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Camera: Conon EOS 550D (Remodeled)
Location: Hitachi-oota city, Ibaraki pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5184 x 3456)
CCD Sensitivity...ISO800




The comet 2009P1 Garradd in that day has been positioned at northern Sagitta. This field is in summer's Milky Way, uncountable fine stars have been distributed around the comet. The coma that has been surrounded by greenish ionized composition has a visual brightness of about 7th magnitude, the clear figure could be appreciated through a portable binocular. And the dust tail stretched in southeast direction has a length of about 15 arc minutes.
The first image in this page has been trimmed to equivalent focal length of 1000mm.





Garradd on Sep 23, 2011

Garradd on Aug 10, 2011


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