UM612 Scan 166


Observing log information

  Object:           UM612
  On scan num:      166 168 170 172 174 176
  Off scan num:     167 169 171 173 175 177
  R.A.:             13.781401 hrs
  Dec.:             -0.991288 deg
  On azimuth:       218.960440 deg
  On zenith dist.:  47.266594 deg
  Off azimuth:      221.944301 deg
  Off zenith dist.: 47.946410 deg
  MJD:              52740
  UTC:              0.317870
  Center freq.:     1398.451579 MHz
  Doppler:          0.00000844
  Num. correlators: 2
  Spectrom. atten.: 38 40 dB
  Bandwidth:         5.0 MHz
  Num. channels:    1024
  Eff. integration: 1260 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

Edited spectrum

This spectrum is the same as Figure 1 but with 18 60-second sub-integrations manually deleted because of interference or a bad baseline.

Figure 2. Edited spectrum