Comet 2019L3 ATLAS on Jan 3, 2022


Date & Time: Jan 3 2022, from 21:17 to 21:46 JST(+0900)
Composed 8 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 2019L3 ATLAS in that day has positioned at the northern part of Gemini, approx. 5 degrees west from Castor. I could detect a 10th magnitude coma and a dimmed dust tail distributed in northwest direction. Currently the comet has about maximum brightness. From now on the comet will go south in Gemini getting darker gradually.
  View angle: 0.70×0.70°


2019L3 ATLAS on Feb 25, 2022
2019L3 ATLAS on Dec 10, 2021

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