N2498 Scan 698


Observing log information

  Object:           N2498
  On scan num:      698 700 702
  Off scan num:     699 701 703
  R.A.:             7.994152 hrs
  Dec.:             24.982569 deg
  On azimuth:       224.703319 deg
  On zenith dist.:  17.713893 deg
  Off azimuth:      224.712163 deg
  Off zenith dist.: 17.716259 deg
  MJD:              52262
  UTC:              0.346852
  Center freq.:     1398.397889 MHz
  Doppler:          0.00004886
  Num. correlators: 2
  Spectrom. atten.: 34 40 dB
  Bandwidth:        10.0 MHz
  Num. channels:    1024
  Eff. integration: 900 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