N04983 Scan 3288

Contents

Observing log information

  Object:           N04983
  On scan num:      3288 3290 3292 3294 3296 3298 3300 3302 3304 3306
  Off scan num:     3289 3291 3293 3295 3297 3299 3301 3303 3305 3307
  R.A.:             13.140923 hrs
  Dec.:             28.320509 deg
  On azimuth:       91.293897 deg
  On zenith dist.:  38.527088 deg
  Off azimuth:      91.266953 deg
  Off zenith dist.: 38.559753 deg
  MJD:              52277
  UTC:              0.356655
  Center freq.:     1389.785934 MHz
  Doppler:          0.00008468
  Num. correlators: 2
  Spectrom. atten.: 33 40 dB
  Bandwidth:        10.0 MHz
  Num. channels:    1024
  Eff. integration: 2820 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 6 60-second sub-integrations manually deleted because of interference or a bad baseline.

Figure 2. Edited spectrum