Comet Wirtanen on Nov 3, 2018


Date & Time: Nov 3 2018, from 24:18 to 24:40 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 Wirtanen in that day was positioned in western region of Fornax with a 8th magnitude coma. We can observe the greenish coma with an apparent diameter of a bit larger than 10 arc minutes. From now on the comet will move to north drastically and cross the winter's constellations; it's expected that the comet will brighten up to 3rd magnitude.
  View angle: 0.70×0.70°





Wirtanen on Nov 10, 2018

Stephan-Oterma on Dec 8, 2018


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