Difference: HifiCalibrationWeb (95 vs. 96)

Revision 962015-12-16 - DavidTeyssier

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HIFI instrument and calibration web page

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Opt. standing waves: diplexer N/A 0.4-0.9 N/A 0.7-2.2
Planetary model error 5 5 5 5
Beam/aperture efficiency 1.1-1.4 1.2-1.3 1-1.1 1.2-1.3
Flux loss due to pointing** 4-7 6-11 5-7 10-20
Flux loss due to pointing** 2-4 3-7 3-4 8-18
 *Note that the "sideband gain ratio" convention used in the HIFI pipeline does not correspond to the ratio between the respective sideband gains (equal to 1 for a balanced system), but to the gain in one sideband normalised by the combined gain of the two sidebands. Consequently, perfectly-balanced sidebands will feature a sideband ratio of 0.5 (see also section 5.3.1 of the Observers' Manual, and the Intensity Calibration Framework document).

**For a point source (worst case scenario) - this flux loss estimates takes into account an APE of 1.2", a residual SIAM bias of order 1.5" and the fact that the H/V respective apertures are slightly offset from the middle synthetic aperture used to point the telescope (offset ranging between 3" in band 1 and 0.5" in band 7)

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