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. © 1996 Optical Society of America.
High performance wobbling subreflector for the MITO 2.6-m telescope / Mainella, G.; DE BERNARDIS, Paolo; DE PETRIS, Marco; A., Mandiello; M., Perciballi; G., Romeo. - In: APPLIED OPTICS. - ISSN 0003-6935. - STAMPA. - 35:(1996), pp. 2246-2252. [10.1364/AO.35.002246]
High performance wobbling subreflector for the MITO 2.6-m telescope
DE BERNARDIS, Paolo;DE PETRIS, Marco;
1996
Abstract
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. © 1996 Optical Society of America.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
