14+08-2b Scan 657

Contents

Observing log information

  Object:           14+08-2b
  On scan num:      657 659 661 663 665 667 669 671 673
  Off scan num:     658 660 662 664 666 668 670 672 674
  R.A.:             13.993953 hrs
  Dec.:             37.609157 deg
  On azimuth:       260.344128 deg
  On zenith dist.:  4.337446 deg
  Off azimuth:      260.335408 deg
  Off zenith dist.: 4.334118 deg
  MJD:              52786
  UTC:              0.139653
  Center freq.:     1418.433617 MHz
  Doppler:          -0.00005607
  Num. correlators: 2
  Spectrom. atten.: 0 0 dB
  Bandwidth:        12.5 MHz
  Num. channels:    8192
  Eff. integration: 2640 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