Comet 2012S1 ISON on early morning of Nov 6, 2013


Date & Time: Nov 5 2013, from 27:37 to 27:57 JST(+0900)
Composed 10 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)
Sensitivity...ISO3200


The comet 2012S1 ISON in that day has positioned around western edge of Virgo, about 3 degrees northwest of beta Vir. in eastern lower dawn skies. The elevation of the comet ISON in this month is getting lower gradually before its perihelion, easy to be affected by haze in lower skies. The distribution of ionized composition of comet in the day looks fairly indistinct. The comet has a coma brightness of 8.5 or 9.0th magnitude and a tail with its length of about 30 arc minutes.
  The image has been cropped with an equivalent f=1350mm. (View angle: 0.94×0.63°)


2012S1 ISON on early morning of Nov 8, 2013
2012S1 ISON on early morning of Nov 2, 2013

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