LVM209. Scan 179


Observing log information

  Object:           LVM209.
  On scan num:      179 181 183 185 187 189
  Off scan num:     180 182 184 186 188 190
  R.A.:             7.888697 hrs
  Dec.:             68.087297 deg
  On azimuth:       358.028652 deg
  On zenith dist.:  29.592243 deg
  Off azimuth:      358.063131 deg
  Off zenith dist.: 29.590638 deg
  MJD:              52286
  UTC:              0.246076
  Center freq.:     1401.640940 MHz
  Doppler:          -0.00000842
  Num. correlators: 2
  Spectrom. atten.: 34 38 dB
  Bandwidth:        10.0 MHz
  Num. channels:    1024
  Eff. integration: 1680 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 3 60-second sub-integrations manually deleted because of interference or a bad baseline.

Figure 2. Edited spectrum