Comet 62P Tsuchinshan1 on early morning of Dec 23, 2017

Date & Time: Dec 22 2017, from 28:44 to 29:29 JST(+0900)
Composed 12 shots with 4min. exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with a conversion lens (f=1600mm, F6.3)
with BaaderPlanetarium UV/IR cut filter
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Canon EOS 600D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

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

The comet Tsuchinshan1 in that day has positioned at central Virgo, about 1.5 degrees northwest of delta Vir with a coma brightness of 10.5th magnitude. In this return, the comet passed the perihelion in Nov 2017 and we will observe it from now on with the brightness getting down gradually.
  View angle: 0.79×0.53°

Comet 2016R2 PanSTARRS on Dec 22, 2017

Comet 2017O1 ASASSN on Dec 22, 2017

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