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Details:
Time: 01:36UT 2021-02-05 Exp.5 x 122sec
Telescope 0.254m f/6.34 with ST-10XME CCD Binning 2x2 1.51"/pix
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.
AT2021blu (= ATLAS21dic) discovered 2021/02/01.467 at R.A. =
10h42m34s.338, Decl. = +34°26'15".00 Mag 18.5:2/1, Type LBV (References: TNS).
The Spider Galaxy = PGC 31923
Reference: David Bishop http://www.rochesterastronomy.org/snimages/
Discovery page (References: TNS):
https://wis-tns.weizmann.ac.il/object/2021blu
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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