Physics – Optics
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apopt..35.2246m&link_type=abstract
Applied Optics, Volume 35, Issue 13, May 1, 1996, pp.2246-2252
Physics
Optics
5
Astronomical Optics, Imaging Systems, Infrared Imaging, Instrumentation: Measurement: And Metrology, Millimeter Waves, Reflection, Telescopes
Scientific paper
The Millimetre and Infrared Testa Grigia Observatory 2.6-m Cassegrain telescope has been designed to allow high-sensitivity observations in the millimeter spectral range. For this purpose, in order to reduce unwanted contributions from local foregrounds, we adopted a sky-chopping technique, by wobbling the telescope subreflector. We describe the design and performance of the wobbling system, which can endure external forced two and three fields square-wave modulation and includes features such as high frequency, high amplitude, high duty cycle, low microphonics, and high stability. millimeter-wave telescope.
de Bernardis Paolo
de Petris Marco
Mainella Gianni
Mandiello Alfonso
Perciballi Maurizio
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