And_VI Scan 157


Observing log information

  Object:           And_VI
  On scan num:      157
  Off scan num:     158
  R.A.:             23.860837 hrs
  Dec.:             24.595012 deg
  On azimuth:       256.712020 deg
  On zenith dist.:  33.744402 deg
  Off azimuth:      256.674564 deg
  Off zenith dist.: 33.712253 deg
  MJD:              52421
  UTC:              0.635382
  Center freq.:     1419.565271 MHz
  Doppler:          0.00007497
  Num. correlators: 2
  Spectrom. atten.: 35 42 dB
  Bandwidth:         5.0 MHz
  Num. channels:    1024
  Eff. integration: 240 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