[Gb-ccb] CCB first light

[Brian Mason]

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


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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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