Comet 2012X1 LINEAR on early morning of Oct 31, 2013


Date & Time: Oct 30 2013, from 28:25 to 28:40 JST(+0900)
Composed 8 shots with 2min. exposed
Optical: VIXEN 20cm(7.9") VISAC with a conversion lens (f=1278mm, F6.4)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Camera: Nikon D700
Location: Kujihama, Hitachi city, Ibaraki pref.

Camera Settings: Recording format...14bit CCD-RAW, converted to 16bit TIFF(2784×1848)
Device size...DX format (24×16mm)
Sensitivity...ISO3200, White Balance...Daylight


This image shows you the comet 2012X1 LINEAR four days later of my first obsevation on Oct 27. The comet has positioned in eastern region of Coma Berenices in lower northeast dawn skies with a coma brightness of about 8th magnitude. The comet looks going on expanding due to the outburst on Oct 20, the apparent diameter has increased about 75% for last four days from 4 to 7 arc minutes. It was a bit hazy condition so the figure of comet looks indistinct, but it's probable that the comet itself is getting dimmer due to the expansion.
(View angle: 1.05×0.7°)


2012X1 LINEAR on early morning of Nov 6, 2013
2012X1 LINEAR on early morning of Oct 27, 2013

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