Comet Encke on Oct 12, 2013


Date & Time: Oct 12 2013, from 26:15 to 26:30 JST(+0900)
Composed 6 shots with 3min. exposed
Optical: TAKAHASHI 12.5cm(4.9") Fluorite refractor with a conversion lens (f=620mm, F5.0)
Auto-guided with VIXEN ATLUX Equatorial
Digital Camera: Canon EOS 550D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)
Sensitivity...ISO1600


The comet Encke in this image has positioned in the southern edge of Lynx, about 5 degrees north of alpha Lyncis. We can recognize a dimmed greenish coma, peculiar to this comet, with a visual brightness of about 9th magnitude. Although any tails cannot be observed, the coma looks be fairly distributed in east direction.
The image has been cropped with an equivalent f=1000mm. (View angle: 1.35×0.9°)


Encke on early morning of Oct 31, 2013
2011L4 Pan STARRS on May 4, 2013

Copyright(c) 2013 by Naoyuki Kurita, All rights reserved.
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