Comet 2020F3 NEOWISE on Jul 31, 2020

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Date & Time: Jul 31 2020, from 20:12 to 20:18 JST(+0900)
Composed 6 shots with 1 minute 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: Hitachi-oota city, Ibaraki pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5472×3648)
Device Size...36×24mm, Sensitivity...ISO800


Click on image to enlarge

Date & Time: Jul 31 2020, from 20:10 to 20:14 JST(+0900)
Composed 4 shots with 1 minute exposed
Optical: AF zoom-Nikkor 80-200mm F2.8 (f=135mm, stop: F5.0)
with Kenko Starry-Night filter
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Camera: Nikon D810A
Location: Hitachi-oota city, Ibaraki pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(7360×4912)
Device Size...FX format(36×24mm)
Sensitivity...ISO800, White Balance...Daylight


The comet 2020F3 NEOWISE in that day positioned in evening western skies, 30 arc minutes north of gamma Com., having a coma brightness of 4th magnitude. Although an 11th-aged moonlight made difficult to detect dimmed didtribution of the comet's ion tail, these images show you a well-evolved dust tail stretched to eastern direction. Comparing with observations in the middle of July, the comet became fairly dark. However I could enjoy sufficiently with an aid of portable binocular.
  1st image has been cropped with an equivalent focal length of 700mm: View angle: 2.92×1.95°
  2nd image has been cropped with an equivalent focal length of 180mm: View angle: 11.3×7.62°


2020F3 NEOWISE on Aug 7, 2020
2020F3 NEOWISE on Jul 23, 2020

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