N-4413 Scan 13


Observing log information

  Object:           N-4413
  On scan num:      13 15 17 19
  Off scan num:     14 16 18 20
  R.A.:             12.442179 hrs
  Dec.:             12.609743 deg
  On azimuth:       169.055086 deg
  On zenith dist.:  26.145894 deg
  Off azimuth:      169.036649 deg
  Off zenith dist.: 26.147125 deg
  MJD:              52637
  UTC:              0.453414
  Center freq.:     1420.051506 MHz
  Doppler:          0.00009737
  Num. correlators: 2
  Spectrom. atten.: 38 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 4 60-second sub-integrations manually deleted because of interference or a bad baseline.

Figure 2. Edited spectrum