- Goals: test of PFM5a at X-band
- Observer: Todd, David (operator)
- Note: Data taken from Sep 3, 2007 through noon Sep 20, 2007 have the Antenna manager bug which causes the OBSC_EL column in the Antenna FITS file to be uncorrected for refraction.
- Weather at start: clear, T=13.6C, wind=1.3m/s, P=931mBar, DP=12.9C
values from | values from
GBT Status window | from FITS header
UT Scan Source Az el Az LPC El LPC Focus DC El LPC El | LFC Y (mm)
01:11 1-5 2020+2942 148 79 +0.062 +0.060 -0.069 -0.044 -15.397 -3.42 0.0
01:19 6-10 2253+1143 107 45 +0.008 +0.008 -0.890 -0.874 -16.054 23.525 -56.34 0.0326
Wow, there is something very wrong with the elevation model. The large size suggests a gravity term problem.
01:28 11-15 2225-0457 135 36 +0.009 -0.007 -0.487 -0.467 -15.764 25.474 -84.9 -0.174
01:34 16-20 " 136 36 -0.016 +0.015 +0.052 +0.044 -15.338 24.615 -82.1 -0.533
01:43 21-25 2020+2942 178 81 +0.029 -0.009 +1.357 +1.372 -16.490 12.118 -0.187 +1.212
01:49 26-30 " 188 81 -0.000 -0.024 +0.023 +0.023 -17.530 12.015 1.197 +0.665
01:56 31-35 2038+5119 359 77 +0.002 +0.004 -0.069 -0.062 -16.327 13.121 -2.730 -0.265
02:10 36-40 2202+4216 428 75 -0.026 -0.013 -0.010 -0.000 -17.416 13.450 -3.033 +1.318
02:18 41-45 0137+3309 432 35 -0.000 -0.011 -1.440 -1.387 -17.386 23.535 -87.85 +0.473
02:30 46-50 0319+4130 414 22 +0.011 +0.027 -0.694 -0.625 -18.381 24.357 -123.9 +0.875
02:39 51-55 0137+3309 434 37 +0.008 -0.041 +0.794 +0.818 -18.112 22.515 -75.546 +0.0097
02:45 56-60 0319+4130 415 24 -0.004 +0.012 -0.666 -0.603 -17.754 23.720 -113.596 +0.603
61-65 +2.116
66-70 +1.172
71-75 0137+3309 402 41 -0.006 -0.005 -18.084 21.224 -65.539 +0.353
76-80 0319+4130 417 27 +0.044 +0.013 -0.614 -0.616 -19.291 22.732 -102.459
81-85 0137+3309 437 43 -0.035 -0.015 +0.700 +0.708 -18.571 21.044 -60.231
86-89 0319+4130
90 focus scan not stored
Kim is now convinced of the problem. Will switch back to PFM4f after a little more exploring of azimuth, and low elevation.
03:32 90-94 2322+5057 401 71.6 -0.049 -0.042 +0.788 +0.818 -19.691 12.465 -12.049 +1.249
03:35 95-99 2107+4214 291 75.9 +0.066 +0.065 +0.130 +0.128 -19.165 11.976 -4.305 +0.914
03:49 100-104 1743-0350 254 12.7 -139.9 +1.894
03:59 105-109 " junk, the LFC was set to 174
04:05 110-114 " 257 10 +0.006 +0.004 -0.255 -0.236 -18.059 20.806 -152.715 +0.357
04:12 115-119 " 258 8.7 -0.012 -0.008 -0.044 -0.065 -15.832 20.484 -155.989 +3.495
Load model4f and run PointingRunV3 el=15-75 by 15 radius=18, flux limit=0.8
04:20 120-129 ignore as LPC was too large to find the source
04:33 130- source is centered now, data are usable
05:00 150 weather: clear skies, T=8.6C, DP=8.4C, P=931mBar, wind=0.4m/sec, going to bed now.
12:00 1913 final scan, light ground fog
-- ToddHunter - 20 Sep 2007
lpc.pdf