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[aprssig] [amsat-bb] Transit of Venus event 5/6 June

Greg Dolkas ko6th.greg at gmail.com
Tue Jun 5 03:32:29 UTC 2012

Hi Bob,

Do I have my math right?  Your website says that the transit starts around
05:13z, which is around 10:13pm local time out here on the West Coast (UTC
-7).  How can that be, if according to the map, the transit will still be
in progress 5hrs later at Sunset?

What am I doing wrong?

Greg  KO6TH

On Mon, Jun 4, 2012 at 4:10 PM, Bob Bruninga <bruninga at usna.edu> wrote:

> Transit of Venus Special Event, 5/6 June 2012:
> For the 7th time in Human history and last time this century, Venus will
> pass in front of the sun on 6 June 2012.  We are encouraging hams to join
> up with astronomers and observers in public places to share in this event.
>  It is observable worldwide except the center of the Atlantic (eastern
> S.America and western Africa)  Everywhere else can see parts of it.  It
> lasts 5+ hours and is fully visible around the Pacific Rim. In the Usa it
> is late afternoon on the 5th towards sunset.
> All previous centuries were before the discovery of radio and so sailing
> ships were dispatched around the globe to time the event.  From these
> times, the size of the Solar System could be calculated.  It took months if
> not years to get the data back.  Now we can do it in 0.05 seconds with Ham
> radio.
> See if you can contact hams at other Transit of Venus sites from your
> public observing site.  Here are the suggested calling frequencies.  We
> don't want contest-style pileups nor home stations.  We just want a place
> where similar public setups can contact like minded other public viewing
> sites via ham radio and make their reports.
> See the web page:  http://aprs.org/VenusTransit2012.html
> We are suggesting these calling frequencies:
> 40 Meters -  7180 KHz
> 20 Meters - 14240 KHz
> 17 Meters - 18140 KHz
> 15 Meters - 21240 KHz
> 12 Meters - 24940 KHz
> 10 Meters - 28340 KHz
> VHF - Join the global APRS message reflector "CQ VENUS" to exchange live
> APRS messages with all other participants.  To do this, send APRS msg to
> CQSRVR with the first words of your message CQ VENUS ... and your text.
>  You can send up to one messae each 30 minutes.  For details, see the web
> page.
> Google for Techniques.
> Bob Bruninga, WB4APR (will be observing in Japan with a Japanese callsign
> JH1IBN-7 from Kyoto.
> _______________________________________________
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> aprssig at tapr.org
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