Hi freq system performance after reflector adjustments

The primary and secondary had undergone a previous round of adjustments. The tertiary had not been looked at since it was on the ground prior to installation in the dome.
 

High frequency calibration data taken 01dec04 through 05feb05 was used to see how well the system was performing. Data from cb,cbh,xband was used. The plots show the system performance for the high frequency receivers: (.ps)  (.pdf): The first 3 figures plot the gain, Tsys, SEFD, and FWHM beam width (in asecs) vs zenith angle for each receiver.

• Fig 1: Cband at 4500,4860, 5000, and 5400 Mhz.
• Fig 2: Cband hi at 6600, 6900,7200,7400 Mhz
• Fig 3:  Xband at 8500, 8800,  9000, and 9200 Mhz
• Fig 4:  Gain, Tsys, SEFD for all receivers versus frequency.  The data has been restricted to the za range [5-14] degrees. The red lines are 4th order polynomial fits to the data so you can see where the points are concentrated.

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