IC883 Scan 381


Observing log information

  Object:           IC883
  On scan num:      381 383 385 387 389
  Off scan num:     382 384 386 388 390
  R.A.:             13.343142 hrs
  Dec.:             34.139390 deg
  On azimuth:       69.971543 deg
  On zenith dist.:  57.257054 deg
  Off azimuth:      69.950716 deg
  Off zenith dist.: 57.290734 deg
  MJD:              52579
  UTC:              0.460845
  Center freq.:     1388.062894 MHz
  Doppler:          0.00004763
  Num. correlators: 2
  Spectrom. atten.: 37 36 dB
  Bandwidth:        10.0 MHz
  Num. channels:    1024
  Eff. integration: 1380 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 3 60-second sub-integrations manually deleted because of interference or a bad baseline.

Figure 2. Edited spectrum