LVM773. Scan 742


Observing log information

  Object:           LVM773.
  On scan num:      742 744 746 748 750 752
  Off scan num:     743 745 747 749 751 753
  R.A.:             16.859819 hrs
  Dec.:             51.140649 deg
  On azimuth:       311.830692 deg
  On zenith dist.:  56.426973 deg
  Off azimuth:      311.815859 deg
  Off zenith dist.: 56.394998 deg
  MJD:              52504
  UTC:              0.243935
  Center freq.:     1379.872078 MHz
  Doppler:          -0.00003046
  Num. correlators: 2
  Spectrom. atten.: 37 37 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