[Gb-ccb] CCB first light
Tony Readhead
acr at astro.caltech.edu
Thu Nov 10 08:46:01 EST 2005
Fantastic!!
This is a very impressive "first light".
the ccb is clearly working well - congratulations to ALL!!
we are much looking forward to doing a lot of science with NRAO pundits
with this system, and I am confident that you will have a lot of users!
Best regards,
Tony
On Wed, 9 Nov 2005, Brian Mason wrote:
>
> hi all- we had some software test time tonight and at the end I got in a
> quick peak scan with the GBT+CCB! First light screenshot from the CLEO
> real-time display is attached, warts and all. The plot is a time series as we
> scan across the source in azimuth (then back again), then ditto in elevation.
> The quantity plotted is switched power and we are looking at the "negative"
> beam. The fuzz at the start of the first source crossing is because I had
> forgotten to enable CCB control of the beam switching signals in the Ka
> receiver (so the receiver wasn't actually switching though CCB thought it
> was) and then fixed it. The weather was poor -- heavy clouds and occasional
> light rain. The source was 2253+1608 (~5 Jy @ 30 GHz).
>
> We still have a fair list of things to sort out and analysis to do to
> determine how close we've come to our goals, but this is a big milestone--
> congrats (again) to all!
>
> Brian
>
>
> --------------------------------------------------------------------
> Brian Mason | office: +1(304)456-2338
> Associate Scientist | fax: +1(304)456-2229
> National Radio Astronomy Observatory | mail: PO Box 2 bmason at gb.nrao.edu
> | Green Bank, WV 24944
> http://www.gb.nrao.edu/~bmason/ |
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