N4419 Scan 65

Contents

Observing log information

  Object:           N4419
  On scan num:      65 67 69 71 73 75 77 79 81 83 85 87
  Off scan num:     66 68 70 72 74 76 78 80 82 84 86 88
  R.A.:             12.449005 hrs
  Dec.:             15.047229 deg
  On azimuth:       237.576076 deg
  On zenith dist.:  35.649097 deg
  Off azimuth:      237.535548 deg
  Off zenith dist.: 35.626881 deg
  MJD:              52330
  UTC:              0.393380
  Center freq.:     1421.674951 MHz
  Doppler:          0.00003881
  Num. correlators: 2
  Spectrom. atten.: 41 40 dB
  Bandwidth:         5.0 MHz
  Num. channels:    1024
  Eff. integration: 3540 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 1 60-second sub-integrations manually deleted because of interference or a bad baseline.

Figure 2. Edited spectrum