IC883 Scan 240

Contents

Observing log information

  Object:           IC883
  On scan num:      240 242 244 246 248 250
  Off scan num:     241 243 245 247 249 251
  R.A.:             13.343132 hrs
  Dec.:             34.139396 deg
  On azimuth:       61.647345 deg
  On zenith dist.:  70.020975 deg
  Off azimuth:      61.624866 deg
  Off zenith dist.: 70.052508 deg
  MJD:              52617
  UTC:              0.307581
  Center freq.:     1388.103170 MHz
  Doppler:          0.00007664
  Num. correlators: 2
  Spectrom. atten.: 38 40 dB
  Bandwidth:        10.0 MHz
  Num. channels:    1024
  Eff. integration: 1800 seconds

Raw spectrum

This spectrum is the integration of all data for the scan with spectra from both polarizations added together. The spectral intensities are Ssys * (on - off) / off, where Ssys is the system temperature in Jy. The system noise flux density equivalent is calibrated for each scan with a calibration noise source firing during each scan. The cal value, in Jy, is calibrated by comparison with a number of continuum sources as described in the summary web page

Figure 1. Unedited spectrum