• System Performance
• xband
• 220505,06 crosses on  3C144,3C461 (with cal)
• 220625 crosses done after sb,xb receiver reinstalled.
  
• sband:
• 220404 : system performance (but no cal).
  
• Tsys
• Monitor tsys with hardware winking cal data.
• Sband:
• movies of tsys made with pulsar cal files.
  
• Xband:
• 17jan22: tsys  and cal value vs freq using data from cal measurements
  
• 09feb22: tsys vs sample,el,ra from recombination line measurements
• 25jun22: Tsys fits using 25jun22 crosses
• 16feb23: solar attenuator increases Tsys.
  
• Crosses on the moon.
  
• 08apr16: crosses on the moon. xband and sband
• Trcvr cooled wideband receiver
• 25,31jan23 measured at antenna test building.
• Tsys variation 
  
• with elevation
• 6apr2016: tsys vs elevation. sband and xband
  
• go el 6 to 88 deg and back down
  
• 24sep2021: tsys vs elevation for xband
• drive 7 to 87 degrees at az 270,0,90,180,270 deg
• Fit tsys vs elevation
• 25jun22 fit for Tatm contribution to Tsys vs elevation.
• 20sep22: fit for Atm tsys contribution using tipping scans at az=0 and 90deg.
  
• total power vs hour of day for model4A sources

• Gain
• Xband
• 25jun22 fit for gain using 25jun22 crosses.
• Side lobes:
• Xband
• 25jun22  azimuth strips on 3C405 (cygnusA)
  
• SEFD
• Xband:
• 28oct21: SEFD from pointing model4A sources.
• 29oct21: compare SEFD polA with SEFD polB to check if temp/gains are the same.
• 25jun22: fit for SEFD using 25jun22 crosses.
  
• Yes they are the same.
• Receiver variation:
• 10oct21: xband electronic gain change with temperature
  
• Misc:
• 2206xx: compare 2dfit beamWidths casA,cygA to get size for extended source flux correction for casA.
  
• 220404: az strip through 3C405 (CygnusA) for sband and xband (.ps) (.pdf)
• 230328: 2d gauss fits with and without linear baseline removal (using 3C286) includes movies of fits.
  

Some Parameters  

	sband	xband	notes
beamWid(Amin)	39.9'	10.0'	sband fwhm from model3A(2016) xband fwhm from model4A(2021)
sefd	4500 Jy	3600 to 4200 Jy	sband: 2016 xband: 2022 at el = 60 deg (more info)
telescope gain		.026 K/Jy	sband xband:(more info)
aperture efficiency		63%	sband xbnad: (more info)
confusion limit(mJy)	151.8 mJy	3.8 mJy	.17mJy*bmWd(amin)^2*(frqGhz)^-.7
integration time to hit confusion limit. bandwid=172e6	6.3 secs	8153 secs
Tsys variation with elevation	20%	about 35 K	sband more info xband: more info (25jun22 crosses)
Tsys	107K	94 to 102K at el=88deg	sband: from crosses on the moon assuming appEff: .59,.63 . Includes Tsys+Tatm (cloudy but no rain). more info xband: 25jun22 crosses (more info)