Comet Swift-Gehrels on Dec 8, 2018


Date & Time: Dec 8 2018, from 19:01 to 19:22 JST(+0900)
Composed 8 shots with 3 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Nikon D810A
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(4080×4080)
Device Size...20×20mm
Sensitivity...ISO4000, White Balance...Daylight


The comet 64P Swift-Gehrels in that day was positioned at central region of Triangulum in higher evening sky. The greenish coma without tails has a brightness of 9th or 10th magnitude; the comet seems a bit dimmer compared with my previous observation.
  View angle: 0.70×0.70°


Swift-Gehrels on Dec 14, 2018
Swift-Gehrels on Nov 10, 2018

Copyright(c) 2018 by Naoyuki Kurita, All rights reserved.
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