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lbaops:lbanov2012:v471ccdlog [2012/11/16 08:19]
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lbaops:lbanov2012:v471ccdlog [2015/12/18 16:38] (current)
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 Coherence confirmed with tone of 819.5 MHz. Coherence confirmed with tone of 819.5 MHz.
  
-Channel 1 and Channel 2 Tsys now stable at ~20000 and ~9000. We will determine the cals using Bruce at the end of the entire LBA session. See V471bCdLog for more information. +Channel 1 and Channel 2 Tsys now stable at ~20000 and ~9000. We will determine the cals using Bruce at the end of the entire LBA session. See V471bCdLog for more information. ​Results from Bruce scans (courtesy of Jamie MacCallum) below: 
 +----------------------------- 
 +Results after LBA run: SEFD @ 1650 is ~1200 Jy for both polarisations\\ 
 +SEFD @ 1370 is ~1500/1450 Jy for RCP/LCP\\ 
 +CALs are 36/42 Jy at 1650 (RCP/​LCP)\\ 
 +CALs are 442/267 Jy at 1370 (RCP/​LCP)\\ 
 +1370 scans were remarkably interference free.\\ 
 +1650 suffered intermittent RFI, sometimes enough to swamp Virgo. Peak amplitude of RFI pulses was ~2000 Jy\\ 
 +RFI sometimes showed time/​spatial structure (appeared as regular variations during a scan but it's not clear whether it's pulsed in time or if it's something being scanned into sidelobes or the like.\\ 
 +All flux density calibrations performed using Virgo. 
 +-----------------------------
 Recording to ATNF_V008B Recording to ATNF_V008B
  
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 Tsys for channel 1 and 2 are still erratic as of 2226 UT Tsys for channel 1 and 2 are still erratic as of 2226 UT
 +
lbaops/lbanov2012/v471ccdlog.txt · Last modified: 2015/12/18 16:38 (external edit)