Comet 2012F6 Lemmon on early morning of Dec 9, 2012


Date & Time: Dec 8 2012, from 27:09 to 27:31 JST(+0900)
Composed 6 shots with 4 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 2012F6 Lemmon in that day has been positioned at eastern region of Crater in southwest lower dawn skies. The sky had the Moonlit of 25 aged moon. I could not detect dimmed distribution of coma and tails, but the comet has a visual brightness of about 10th magnitude. The comet will move to southern skies from now on, be out of observation at Japan. And it's predicted that the comet will brighten up to 3rd magnitude in southern hemisphere.


2012F6 Lemmon on early morning of Dec 23, 2012
Hergenrother on Dec 8, 2012

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