Object: IC883 On scan num: 381 383 385 387 389 Off scan num: 382 384 386 388 390 R.A.: 13.343142 hrs Dec.: 34.139390 deg On azimuth: 69.971543 deg On zenith dist.: 57.257054 deg Off azimuth: 69.950716 deg Off zenith dist.: 57.290734 deg MJD: 52579 UTC: 0.460845 Center freq.: 1388.062894 MHz Doppler: 0.00004763 Num. correlators: 2 Spectrom. atten.: 37 36 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1380 seconds
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
This spectrum is the same as Figure 1 but with 3 60-second sub-integrations manually deleted because of interference or a bad baseline.