LVM861. Scan 315


Observing log information

  Object:           LVM861.
  On scan num:      315 317 319 321 323
  Off scan num:     316 318 320 322 324
  R.A.:             18.745725 hrs
  Dec.:             48.788703 deg
  On azimuth:       308.673755 deg
  On zenith dist.:  56.176642 deg
  Off azimuth:      308.657816 deg
  Off zenith dist.: 56.143152 deg
  MJD:              52457
  UTC:              0.445451
  Center freq.:     1389.686161 MHz
  Doppler:          0.00000637
  Num. correlators: 2
  Spectrom. atten.: 35 42 dB
  Bandwidth:        10.0 MHz
  Num. channels:    1024
  Eff. integration: 1440 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 2 60-second sub-integrations manually deleted because of interference or a bad baseline.

Figure 2. Edited spectrum