Comet 2020F3 NEOWISE on Aug 15, 2020

Click on image to enlarge

Date & Time: Aug 15 2020, from 19:59 to 20:32 JST(+0900)
Composed 10 shots with 3 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with IDAS LPS-D1 Light-pollution suppression filter
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Camera: Canon EOS 6D (Remodeled)
Location: Koumi town, Nagano pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5472×3648)
Device Size...36×24mm, Sensitivity...ISO1600


The comet 2020F3 NEOWISE in that day positioned in evening western skies, about 13 degrees southwest of Arcturus, alpha Bootis. I estimated a coma brightness as approx. 7th magnitude. The comet has a triangle-shaped dust tail with a length of a bit longer than a degree stretched in east direction. However I could hardly detect an ion tail which could be observed clearly in my previous observation.
  View angle: 3.86×2.58°


2020S3 Erasmus on early morning of Nov 14, 2020
2020F3 NEOWISE on Aug 7, 2020

Copyright(c) 2020 by Naoyuki Kurita, All rights reserved.
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