Comet 2021A1 Leonard on early morning of Dec 11, 2021

Click on image to enlarge

Date & Time: Dec 10 2021, from 29:34 to 29:39 JST(+0900)
Composed 6 shots with 1 minute exposed
Optical: TAKAHASHI 12.5cm Fluorite refractor with conversion lens (f=710mm, F5.7)
Auto-guided with VIXEN ATLUX Equatoria
Digital Camera: Canon EOS 550D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)
Sensitivity...ISO1600


In the dawn lower eastern skies, I could capture the comet 2021A1 Leonard in its maximum brightness of about 4th magnitude. It was about 15 degrees in the elevation of comet, I was forced to take through the branches of trees. In that day the comet positioned at southern edge of Hercules, the image shows a dust tail with a length of about 1.5 degrees. After the next day, the comet Leonard get close to the sun and become unobservable. Afterwards the comet will move to the western evening sky.
  View angle: 1.12×1.68°


Borrelly on Jan 3, 2022
2021A1 Leonard on Dec 3-4, 2021

Copyright(c) 2021 by Naoyuki Kurita, All rights reserved.
To top page To Comets&Meteors index