Comet 2020M3 ATLAS on Dec 10, 2020


Date & Time: Dec 10 2020, from 19:43 to 20:28 JST(+0900)
Composed 12 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


Click on image to enlarge

C/2020M3 ATLAS with IC405 & IC410 in Auriga

Date & Time: Dec 10 2020, from 19:27 to 20:11 JST(+0900)
Composed 12 shots with 4 minutes exposed
Optical: BORG 67FL with conversion lens (f=324mm, F4.8)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with VIXEN ATLUX Equatorial
Digital Camera: Canon EOS 6D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5472×3648)
Device Size...36×24mm, Sensitivity...ISO2000


The comet C/2020M3 ATLAS brightened up to 8th magnitude in Nov 2020, and started to be down the magnitude gradually in Dec. In that day the comet was observed with 9th magnitude just next to the diffused nebulae of IC405 and IC410 in Auriga. The size of coma has shrunk to about one third of that in previous observation. In addition, the greenish ionized composition has been inconspicuous.
  1st image: View angle: 0.70×0.70°
  2nd image: View angle: 6.34×4.24°


2020R4 ATLAS on early morning of Apr 11, 2021
2020M3 ATLAS on Nov 20, 2020

Copyright(c) 2020 by Naoyuki Kurita, All rights reserved.
To top page To Comets&Meteors index