Comet Hergenrother on Dec 8, 2012


Date & Time: Dec 8 2012, from 20:40 to 20:57 JST(+0900)
Composed 3 shots with 8 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain, with a conversion lens (f=1790mm, F7.1)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Nikon D700
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(2784×1848)
Device Size...DX format (24×16mm)
Sensitivity...ISO2500, White Balance...Daylight


The comet Hergenrother in Dec 2012 has been positioned in western region of Andromeda, I could observe it in zenith before midnight. Although the brightness of coma has been down to 12th magnitude or so, you can detect a short dust tail stretched in east direction.



2012F6 Lemmon on early morning of Dec 9, 2012
Hergenrother on Nov 17, 2012

Copyright(c) 2012 by Naoyuki Kurita, All rights reserved.
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