Comet Stephan-Oterma on Dec 29, 2018


Date & Time: Dec 29 2018, from 23:21 to 23:486 JST(+0900)
Composed 10 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 38P Stephan-Oterma has paased the perihelion and is getting down its brightness gradually. In that day, a 10th magnitude comet is moving northward in the southern region of Lynx. The comet has a dust tail stretched in west direction which has a length of approximately 15 arc minutes estimated with the image.
  View angle: 0.70×0.70°


Stephan-Oterma on Feb 1, 2019
Stephan-Oterma on Dec 14, 2018

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