LVM866. Scan 661


Observing log information

  Object:           LVM866.
  On scan num:      661 663 665 667 669 671
  Off scan num:     662 664 666 668 670 672
  R.A.:             18.992678 hrs
  Dec.:             50.808982 deg
  On azimuth:       312.527619 deg
  On zenith dist.:  58.669292 deg
  Off azimuth:      312.511354 deg
  Off zenith dist.: 58.637569 deg
  MJD:              52503
  UTC:              0.345405
  Center freq.:     1383.124884 MHz
  Doppler:          -0.00001183
  Num. correlators: 2
  Spectrom. atten.: 35 42 dB
  Bandwidth:        10.0 MHz
  Num. channels:    1024
  Eff. integration: 1680 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