Any ex-CSIRO people on Link? Might be interested in this. Regards, Kate (CSIRO Division of Radiophysics 1988-1992)
------ Forwarded Message -------- From: Ekers, Ron (S&A, Marsfield) <[email protected]> Date: 19/02/2022 3:55:43 AM Subject: 3C273 lunar occultation on Feb 19 2022 In 1962 a series of lunar occultations of the strong radio source 3C273 were observed with the newly completed Parkes radio telescope by a team led by Cyril Hazard. The arcsecond precision position and structure led to the identification of a 13mag "star" which Martin Schmidt discovered had a redshift of 0.158. This was the discovery of the first quasar and the subsequent realizations that it was powered by a black hole. This new field of AGN astronomy has dramatically changed our understanding of the Universe. [1]https://www.parkes.atnf.csiro.au/people/sar049/3C273/ 60 years later on the on 20 February we have another lunar occultation of 3C273 visible from Parkes. David Herald predicts that it will occur on 20 February, from 1:23 – 1:43 AM (AEDT) (UTC 19 Feb 14:23 to 14:42). CSIRO Space and Astronomy have decided to observe this historical event and share the results in real-time. We will use a resurrected chart recorder to see a repeat of the spectacular Fresnel diffraction pattern as the source is occulted. Background information and a running description of the real-time event will be provided by John Reynolds and Dave Jauncey. Cyril Hazard has agreed to make some remarks. John Sarkissian has done all the organization to make this possible. There are two different options to participate: You can watch the real-time video of the occultation on YouTube: [2]https://www.youtube.com/watch?v=gOrkMKp__BE It will be streaming Sunday morning from 1:00 to 2:00 AM (AEDT) which is UTC 14:00 to 15:00 on Saturday Feb 19. The recording will also be edited and made available for later viewing. But the more interesting option will be to go to the Parkes GatherTown history. [3]https://app.gather.town/app/uUZhK6tXbUAzIRuJ/Parkes%20history Then find the 1961 Parkes dish space (we will try to land you straight there) and you will find instructions to watch the video from GatherTown. This will also be an opportunity to meet and talk to others who are interested in this historical event and also an opportunity to explore the 60year history of the Parkes telescope through GatherTown. A short description of this GatherTown is attached. GatherTown is always open so you can go there anytime but for the realtime event you have to be there between 1:00 and 2:00 AM on Sunday morning Feb 20 (AEDT), UTC 14:00 to 15:00 on Saturday Feb 19. Ron Ron Ekers, AO, FAA, NAS, FRS CSIRO Fellow Space & Astronomy, CSIRO E: [4][email protected] T: +61 2 93724600 References 1. https://www.parkes.atnf.csiro.au/people/sar049/3C273/ 2. https://www.youtube.com/watch?v=gOrkMKp__BE 3. https://app.gather.town/app/uUZhK6tXbUAzIRuJ/Parkes history 4. mailto:[email protected] ----- End forwarded message ----- _______________________________________________ Link mailing list [email protected] https://mailman.anu.edu.au/mailman/listinfo/link
