Monitors:

Current Sky:

  • PWV = 0.98 mm
  • tau0220 = 0.044
  • tau0270 = 0.064
  • tau0345 = 0.158
  • tau0492 = 1.068
  • tau0809 = 1.476

Links:

Contact:

  • Yoichi Tamura
  • last update: 27 Mar 14

Atmospheric Window Monitor (2015/12/19 13:00-14:00 UTC)

  • Atmospheric windows in 270, 350, 460 and 800-GHz waveband, calculated by am, using the precipitable water vapor measured at 183.3 GHz.
  • White solid curve indicates the transmission curve at zenith, and grey lines indicate those at EL = 60 and 30 deg.
  • Major emission lines, 12CO, [CI], HCN, and HCO+, are shown in the plots.