[LINK] Fw: 3C273 lunar occultation on Feb 19 2022

[Antony Barry]

I briefly knew Dave Jauncy and Cyril Hazard when I was a postgrad at
Sydney University School of Physics in 1961. Hazard was working with Prof
Hanbury-Brown and Prof Twiss on their steller interferometer and Jauncy was
one of Bernie Mills (Mill cross) students.
I was working in the Plasma Physics Department so I didn't know them well.
So many years ago .....

Tony

On Sat, Feb 19, 2022 at 8:41 PM Kate Lance <kate at lancewood.net> wrote:

> 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) <ron.ekers at csiro.au>
>    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]ron.ekers at csiro.au 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:ron.ekers at csiro.au
>
> ----- End forwarded message -----
>
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