Comet 2012S1 ISON on early morning of Sep 29, 2013


Date & Time: Sep 28 2013, from 27:51 to 28:04 JST(+0900)
Composed 12 shots with 1min. exposed
Optical: TAKAHASHI 12.5cm(4.9") Fluorite refractor with a conversion lens (f=700mm, F5.6)
Auto-guided with VIXEN ATLUX Equatorial
Digital Camera: Canon EOS 600D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

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




I could observe the comet 2012S1 ISON for the first time in that day in lower eastern dawn skies, around west part of the Leo with about 11th magnitude in coma brightness. Although the sky was under moonlight of the last quarter, the image shows you the comet has a short but clear dust tail stretched about 5 arc minutes in length.
  The image has been cropped with an equivalent f=1500mm. (View angle: 0.9×0.6°)





2012S1 ISON on early morning of Oct 13, 2013

2012X1 LINEAR on May 2, 2014


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