LVM854. Scan 4074


Observing log information

  Object:           LVM854.
  On scan num:      4074 4076 4078 4080 4082 4084
  Off scan num:     4075 4077 4079 4081 4083 4085
  R.A.:             18.556305 hrs
  Dec.:             46.992909 deg
  On azimuth:       308.344296 deg
  On zenith dist.:  59.976516 deg
  Off azimuth:      308.820408 deg
  Off zenith dist.: 60.820230 deg
  MJD:              52526
  UTC:              0.263067
  Center freq.:     1397.722671 MHz
  Doppler:          -0.00003027
  Num. correlators: 2
  Spectrom. atten.: 35 42 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