N7648 Scan 517


Observing log information

  Object:           N7648
  On scan num:      517 519 521
  Off scan num:     518 520 522
  R.A.:             23.398524 hrs
  Dec.:             9.669116 deg
  On azimuth:       251.341252 deg
  On zenith dist.:  53.430700 deg
  Off azimuth:      251.307257 deg
  Off zenith dist.: 53.399173 deg
  MJD:              52280
  UTC:              0.042766
  Center freq.:     1403.818005 MHz
  Doppler:          -0.00009366
  Num. correlators: 2
  Spectrom. atten.: 33 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