Comet 2015ER61 PanSTARRS on early morning of Apr 29, 2017

Date & Time: Apr 28 2017, from 27:19 to 27:38 JST(+0900)
Composed 9 shots with 2min. 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 550D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

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

The comet 2015ER61 PanSTARRS in that day has positioned in lower dawn skies, around the northern region of Aquarius. The comet had a burst on Apr 4 and brighten for about 2 magnitude, I estimated a bright of coma as 7th magnitude in this image. You can detect a very dimmed dust tail stretched in west directon with about a degree in length.
  View angle: 1.82×1.21°

Comet 2015ER61 PanSTARRS on early morning of May 21, 2017

Comet Honda-Mrkos-Pajdusakova on Mar 4, 2017

Copyright(c) 2017 by Naoyuki Kurita, All rights reserved.
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