N3154 Scan 38


Observing log information

  Object:           N3154
  On scan num:      38 40 42 44 46 48
  Off scan num:     39 41 43 45 47 49
  R.A.:             10.217652 hrs
  Dec.:             17.029995 deg
  On azimuth:       85.889605 deg
  On zenith dist.:  67.065230 deg
  Off azimuth:      85.862148 deg
  Off zenith dist.: 67.101213 deg
  MJD:              52531
  UTC:              0.458900
  Center freq.:     1389.900577 MHz
  Doppler:          0.00003990
  Num. correlators: 2
  Spectrom. atten.: 35 40 dB
  Bandwidth:        10.0 MHz
  Num. channels:    1024
  Eff. integration: 840 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 31 60-second sub-integrations manually deleted because of interference or a bad baseline.

Figure 2. Edited spectrum