Comet 2020R4 ATLAS on early morning of Apr 11, 2021


Date & Time: Apr 10 2021, from 27:27 to 27:55 JST(+0900)
Composed 9 shots with 4 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 & Lacerta M-GEN
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 C/2020R4 ATLAS in that day was observed in the summer Milky Way at 12.5 degrees west of Altair of the dawn eastern skies with a brightness of 9th magnitude. The comet has the almost closest approach to the Earth, is moving rapidly to northwest direction. The image shows you that the comet has a short dust tail in west direction.
  View angle: 0.70×0.70°


2020R4 ATLAS on May 3, 2021
2020M3 ATLAS on Dec 10, 2020

Copyright(c) 2021 by Naoyuki Kurita, All rights reserved.
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