Comet 2017O1 ASASSN on Nov 11, 2017

Date & Time: Nov 11 2017, from 19:12 to 19:53 JST(+0900)
Composed 6 shots with 8min. exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with IDAS LPS-P2-FF Light-pollution suppression filter
Auto-guided with TAKAHASHI JP Equatorial & SBIG STV
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 2017O1 ASASSN in that day has positioned at the northern region of Camelopardalis, I could observe the comet for all night because the comet was a cicumpolar star. I could estimate the coma brightness as about 9th magnitude and detect no remarkable tails.
  The image has been cropped with an equivalent f=1000mm. (View angle: 1.27×0.85°)

Comet 2017O1 ASASSN on Dec 22, 2017

Comet 2017O1 ASASSN on Sep 30, 2017

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