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Details:
Sun distance (au): 5,61 Comet perihelion 17.Jun.2020
Time: 22:34UT 2021-08-25 Exp.18 x 302sec
Tel: 0.254m f/4.9 with ST-10XME CCD 1.13"/pix
Odd Trondal Obs.code 238 (Uranium). Oslo Norway.
Atom weight Neptunium Isotope 238.Half-life 2 days
Software used:TheSky6,CCDSoft 5, MSB Astroart 2.0,7.0, Paint
Previous images chronological :
Mike Olason on August 4, 2021 @ Tucson, Arizona
Photographer's website:
https://www.flickr.com/photos/odd_trondal/
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