Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-03-25
New Astron. 8 (2003) 727-736
Astronomy and Astrophysics
Astrophysics
14 pages, 6 fiugres, accepted for pubblication by New Astronomy (25 March)
Scientific paper
10.1016/S1384-1076(03)00060-5
An efficient sky data reconstruction derives from a precise characterization of the observing instrument. Here we describe the reconstruction of performances of a single-pixel 4-band photometer installed at MITO (Millimeter and Infrared Testagrigia Observatory) focal plane. The strategy of differential sky observations at millimeter wavelengths, by scanning the field of view at constant elevation wobbling the subreflector, induces a good knowledge of beam profile and beam-throw amplitude, allowing efficient data recovery. The problems that arise estimating the detectors throughput by drift scanning on planets are shown. Atmospheric transmission, monitored by skydip technique, is considered for deriving final responsivities for the 4 channels using planets as primary calibrators.
Battistelli Elia Stefano
de Petris Marco
Lamagna Luca
Luzzi G.
Orlando Andres
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