CIG426 Scan 549


Observing log information

  Object:           CIG426
  On scan num:      549 551 553 555 557 559
  Off scan num:     550 552 554 556 558 560
  R.A.:             10.604777 hrs
  Dec.:             49.371877 deg
  On azimuth:       406.711759 deg
  On zenith dist.:  63.228126 deg
  Off azimuth:      406.692800 deg
  Off zenith dist.: 63.259201 deg
  MJD:              52785
  UTC:              0.727442
  Center freq.:     1393.206101 MHz
  Doppler:          -0.00007485
  Num. correlators: 2
  Spectrom. atten.: 0 0 dB
  Bandwidth:        50.0 MHz
  Num. channels:    8192
  Eff. integration: 1530 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 18 60-second sub-integrations manually deleted because of interference or a bad baseline.

Figure 2. Edited spectrum