Comet 2012X1 LINEAR on early morning of Nov 12, 2013

Date & Time: Nov 11 2013, from 28:30 to 28:39 JST(+0900)
Composed 5 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: Canon EOS 600D (Remodeled)
Location: Kujihama, Hitachi city, Ibaraki pref.

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

This image shows you the comet 2012X1 LINEAR six days later of my previous obsevation. The comet has positioned in lower northeast dawn skies, around 4 degrees northwest of Arcturus in Bootes. Although the shell-like coma of the comet has fairly expanded, somehow this image can show the border of outer shell, its diameter can be estimated about 12 arc minutes. The value is almost same with that in previous observation, it's considered that the further outer matters has distributed and become invisible.
  The image has cropped with an equivalent f=1350mm. (View angle: 0.94×0.63°)

2012X1 LINEAR on early morning of Jan 5, 2014

2012X1 LINEAR on early morning of Nov 6, 2013

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