LVM860. Scan 4248


Observing log information

  Object:           LVM860.
  On scan num:      4248 4250 4252 4254 4256 4258
  Off scan num:     4249 4251 4253 4255 4257 4259
  R.A.:             18.735003 hrs
  Dec.:             52.933438 deg
  On azimuth:       314.308642 deg
  On zenith dist.:  56.774032 deg
  Off azimuth:      314.294427 deg
  Off zenith dist.: 56.743177 deg
  MJD:              52533
  UTC:              0.247546
  Center freq.:     1382.137029 MHz
  Doppler:          -0.00002171
  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 3 60-second sub-integrations manually deleted because of interference or a bad baseline.

Figure 2. Edited spectrum