title: High-performance wobbling subreflector for the Millimetre and Infrared Testa Grigia Observatory 2.6-m telescope.
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.
authors.forename: G
authors.initials: G
authors.lastname: Mainella
authors.forename: P
authors.initials: P
authors.lastname: de Bernardis
authors.forename: M
authors.initials: M
authors.lastname: De Petris
authors.forename: A
authors.initials: A
authors.lastname: Mandiello
authors.forename: M
authors.initials: M
authors.lastname: Perciballi
authors.forename: G
authors.initials: G
authors.lastname: Romeo