LVM160. Scan 67


Observing log information

  Object:           LVM160.
  On scan num:      67 69 71 73 75 77
  Off scan num:     68 70 72 74 76 78
  R.A.:             5.714643 hrs
  Dec.:             69.892566 deg
  On azimuth:       338.062937 deg
  On zenith dist.:  38.481853 deg
  Off azimuth:      338.082083 deg
  Off zenith dist.: 38.461965 deg
  MJD:              52755
  UTC:              0.980764
  Center freq.:     1401.553703 MHz
  Doppler:          -0.00005419
  Num. correlators: 2
  Spectrom. atten.: 27 31 dB
  Bandwidth:        10.0 MHz
  Num. channels:    1024
  Eff. integration: 1740 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 2 60-second sub-integrations manually deleted because of interference or a bad baseline.

Figure 2. Edited spectrum