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Details:
Time: 01:58UT 2021-03-03 Exp.11 x 2 min
Tel: C14 @ f/8.2 AP7 CCD 1.78"/pix Paramount GT-1100S
Odd Trondal Obs.code 238 (Uranium). Oslo Norway.
Plutonium Isotope.Atom-weight 238.Half-life 87.7 years gives power to the Voyagers, New Horizon and other distant spacecrafts.
AT2021dvn (= ATLAS21gyy) discovered 2021/02/25.538 at R.A. =
16h15m07s.030, Decl. = +66°49'23".50 Mag 18.7:2/25, Type SN Ia (host LEDA 2691532)
(References: TNS)
Reference: David Bishop http://www.rochesterastronomy.org/snimages/
Discovery page (References: TNS):
https://wis-tns.weizmann.ac.il/object/2021dvn
Reference image from Aladin or Sloan Digital Sky Survey
Software used:TheSky6,CCDSoft 5, MSB Astroart 2.0,7.0, Paint
Photographer's website:
https://www.flickr.com/photos/odd_trondal/
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