Astronomy Cafe – Sep 20, 2021

Posted by as Astro Cafe

Video transcript of meeting

  • Remembering Ed Maxfield – David Lee
  • Earth – Potentially Habitable Planet – Nathan Hellner-Mestelman
    • Earth is pretty small…some comparisons with larger celestial objects
    • Neptune, Uranus, Saturn, Jupiter, Alpha Centauri, the Sun, Sirius, Vega, Bellatrix, Pollux, Sagittarius A, Beta Centauri,  Arcturus, Aldebaran, Rigel, Deneb, Rho Cassiopeia, Betelgeuse.
    • Red Hyper-giants:  Uy Scuti, Stephenson 2-18
    • Supermassive Black Holes: Cygnus A, Messier 84, Hercules A
    • Primary ultra-massive Black Holes: Messier 87, OJ 287
    • Ton 618 – Hyper-luminous Quasar (13.1 billion Light Years away)
  • M33 – The Triangulum Galaxy – Reg Dunkley
    • Unusual rotation indicated Dark Matter (first proposed by Vera Rubin)
    • Part of the Local Group of galaxies
    • Since it’s so faint visually, Reg uses photos to observe this galaxy – a stack of over 6 hours of subframes
    • M33 in Hydrogen Alpha photo by Dan Meek, Calgary Centre
      • NGC 604 and 595 – knots of stellar activity – nebulae and star clusters
    • Dave Payne’s photos showing NGC 604 and 595
    • Dorothy has sketched M33 from a dark observing site
  • Photos by John McDonald
    • Deer Lick Group and Stefan’s Quintet – test photo from the two telescopes at the VCO
    • Comparing the distances of the objects – millions of Light Years away
    • Eta Carina nebula photo – newly processed using PixInsight – with and without stars, and original
    • UGC12127 – nearby cluster of galaxies suggested by Dorothy & Miles Paul
    • Starnet++ – a standalone app to remove stars suggested by Dave Payne
  • Edmonton Centre photos – Dave Robinson
    • NGC 1499 – California Nebula (2 orientations) by Tom Owen 
    • Jupiter sequence of photos – Abdur Anwar and Arnold Rivera
    • Saturn – Abdur Anwar and Arnold Rivera
    • Andromeda Galaxy taken with a simple, non-tracking setup using camera and lens – Alister Ling
  • Hubble deep field photo – Brock Johnston
  • SIGs – meeting online
    • Astrophotography – Wednesday
    • Makers – Thursday
  • Fall Fairfield – RASC Victoria will be at this FGCA public event in the field – Sunday at Noon – Randy Enkin to email a notice to members