The optical design of two Cassegrain-type telescopes of 1200- and 2500-mm primary mirrors has been studied by wobbling subreflectors to obtain differential measurements in wavelengths ranging from 300 Am to 2 mm of the spectrum. Wide chopping angles in the sky have been reached in spite of the large apertures and high secondary magnifications. Diffraction-limited performances are maintained by tilting the secondary mirror around the primary focus. This work is included in the TIR (Telescopio InfraRosso) project.

De Petris, M., Gervasi, M., & Liberati, F. (1989). New far infrared and millimetric telescopes for differential measurements with a large chopping angle in the sky. APPLIED OPTICS, 28(10), 1785-1792 [10.1364/AO.28.001785].

New far infrared and millimetric telescopes for differential measurements with a large chopping angle in the sky

GERVASI, MASSIMO;
1989

Abstract

The optical design of two Cassegrain-type telescopes of 1200- and 2500-mm primary mirrors has been studied by wobbling subreflectors to obtain differential measurements in wavelengths ranging from 300 Am to 2 mm of the spectrum. Wide chopping angles in the sky have been reached in spite of the large apertures and high secondary magnifications. Diffraction-limited performances are maintained by tilting the secondary mirror around the primary focus. This work is included in the TIR (Telescopio InfraRosso) project.
No
Articolo in rivista - Articolo scientifico
Scientifica
Instrumentation: far infrared telescopes;
English
1785
1792
8
De Petris, M., Gervasi, M., & Liberati, F. (1989). New far infrared and millimetric telescopes for differential measurements with a large chopping angle in the sky. APPLIED OPTICS, 28(10), 1785-1792 [10.1364/AO.28.001785].
De Petris, M; Gervasi, M; Liberati, F
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/34427
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