22491-1808 Scan 41

Contents

Observing log information

  Object:           22491-1808
  On scan num:      41 43 45 47 49 51 53 55 57 59 61 63
  Off scan num:     42 44 46 48 50 52 54 56 58 60 62 64
  R.A.:             22.818345 hrs
  Dec.:             -18.133293 deg
  On azimuth:       209.952690 deg
  On zenith dist.:  62.132604 deg
  Off azimuth:      209.915837 deg
  Off zenith dist.: 62.117765 deg
  MJD:              52747
  UTC:              0.674630
  Center freq.:     1317.663039 MHz
  Doppler:          0.00007469
  Num. correlators: 2
  Spectrom. atten.: 28 40 dB
  Bandwidth:        20.0 MHz
  Num. channels:    1024
  Eff. integration: 2820 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 26 60-second sub-integrations manually deleted because of interference or a bad baseline.

Figure 2. Edited spectrum