Object: 1754+2401 On scan num: 299 301 303 305 307 309 Off scan num: 300 302 304 306 308 310 R.A.: 17.949129 hrs Dec.: 24.017366 deg On azimuth: 278.426106 deg On zenith dist.: 60.286953 deg Off azimuth: 278.400589 deg Off zenith dist.: 60.251046 deg MJD: 52457 UTC: 0.384861 Center freq.: 1392.771428 MHz Doppler: -0.00001396 Num. correlators: 2 Spectrom. atten.: 35 42 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1740 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 2 60-second sub-integrations manually deleted because of interference or a bad baseline.
This is the section of spectrum measured to obtain the parameters listed below. The three horizontal dotted lines are the baseline, the peak level selected, and 20% of the peak level. The two vertical dotted lines mark the selected 20% line width edges. The solid horizontal line marks the velocity range chosen for the the line profile flux density integral. This spectrum has a second-order least squares fit baseline removed using most of the baseline shown in Figure 2.
Peak intensity: 0.006 Jy Lower 20% velocity: 5876.7 km/s Upper 20% velocity: 6018.1 km/s Systemic velocity: 5947.4 km/s Line width (20%): 141.3 km/s Profile integral: 0.64 Jy * km/s A: 0.56 B: 0.62 Ratio B/A: 1.109 Flux integral velocity range: 5862.6 - 6032.0 km/s