M110 Scan 820


Observing log information

  Object:           M110
  On scan num:      820
  Off scan num:     821
  R.A.:             0.672930 hrs
  Dec.:             41.686459 deg
  On azimuth:       297.538111 deg
  On zenith dist.:  52.530735 deg
  Off azimuth:      297.520533 deg
  Off zenith dist.: 52.495688 deg
  MJD:              52504
  UTC:              0.536991
  Center freq.:     1419.559313 MHz
  Doppler:          0.00007078
  Num. correlators: 2
  Spectrom. atten.: 37 37 dB
  Bandwidth:         5.0 MHz
  Num. channels:    1024
  Eff. integration: 240 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 1 60-second sub-integrations manually deleted because of interference or a bad baseline.

Figure 2. Edited spectrum