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Details:
Time: 01:43UT 2021-04-28 Exp.20 x 30sec
Tel: C14 @ f/7.88 AP7 CCD 1.77"/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.
AT2021kni (= PSN J23505558+2705349), TNS discovered 2021/04/26.766 by Koichi Itagaki
Found in NGC 7767 at R.A. = 23h50m55s.580, Decl. = +27°05'34".90
Located 11".0 west and 21".0 north of the center of NGC 7767
Mag 16.7:4/26, Type unknown (References: CBAT TOCP)
Reference: David Bishop http://www.rochesterastronomy.org/snimages/
Discovery page (References: TNS):
https://wis-tns.weizmann.ac.il/object/2021kni
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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