LVM195. Scan 4937


Observing log information

  Object:           LVM195.
  On scan num:      4937 4939 4941 4943 4945 4947
  Off scan num:     4938 4940 4942 4944 4946 4948
  R.A.:             7.482834 hrs
  Dec.:             65.553945 deg
  On azimuth:       347.172650 deg
  On zenith dist.:  28.359432 deg
  Off azimuth:      347.208555 deg
  Off zenith dist.: 28.351211 deg
  MJD:              52545
  UTC:              0.553137
  Center freq.:     1389.627542 MHz
  Doppler:          0.00007188
  Num. correlators: 2
  Spectrom. atten.: 35 34 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