0340+3908 Scan 75


Observing log information

  Object:           0340+3908
  On scan num:      75 77 79 81 83 85
  Off scan num:     76 78 80 82 84 86
  R.A.:             3.732476 hrs
  Dec.:             39.295369 deg
  On azimuth:       284.825412 deg
  On zenith dist.:  31.958441 deg
  Off azimuth:      284.810955 deg
  Off zenith dist.: 31.923491 deg
  MJD:              52519
  UTC:              0.542303
  Center freq.:     1397.429800 MHz
  Doppler:          0.00009164
  Num. correlators: 2
  Spectrom. atten.: 37 42 dB
  Bandwidth:        10.0 MHz
  Num. channels:    1024
  Eff. integration: 1260 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 18 60-second sub-integrations manually deleted because of interference or a bad baseline.

Figure 2. Edited spectrum