Comet Stephan-Oterma on Dec 14, 2018


Date & Time: Dec 14 2018, from 25:08 to 25:26 JST(+0900)
Composed 10 shots with 2 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...ISO6400, White Balance...Daylight


The comet 38P Stephan-Oterma has paased the perihelion and is getting down its brightness gradually. In that day, a 9th or 10th magnitude comet just entered in the region of Lynx from that of Cancer. 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 Dec 29, 2018
Stephan-Oterma on Dec 8, 2018

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