De Petris, M., Catalano, A., De Gregori, S., Lamagna, L., Lattanzi, V., Luzzi, G., Maoli, R., Melchiorri, A., Melchiorri, F., Savini, G., Vetrani, G. G., Battistelli, E. S., Valenziano, L., Mandolesi, N., Villa, F., Cuttaia, F., Ade, Peter A. R. ORCID: https://orcid.org/0000-0002-5127-0401, Mauskopf, Philip Daniel ORCID: https://orcid.org/0000-0001-6397-5516, Orlando, Angiola, Encrenaz, P., Pardo, J. R. and Cernicharo, J. 2005. CASPER: Concordia Atmospheric SPectroscopy of Emitted Radiation. Presented at: Dome C: Astronomy and Astrophysics Meeting, Toulouse, France, 28-30 June 2004. Published in: Giard, M. ed. Dome C: Astronomy and Astrophysics Meeting : Toulouse, 28-30 June 2004. EAS Publications Series. EAS publications series , vol.14 Les Ulis, France: EDP Sciences, pp. 233-238. 10.1051/eas:2005036 |
Abstract
CASPER (Concordia Atmospheric SPectroscopy of Emitted Radiation) is a spectrometer proposed for installation at Dome C, devoted to measurements of atmospheric emission in the spectral region between 180 μm and 3 mm (3–55 cm-1). This instrument will be able to perform continuous spectral sampling at different altitudes at angular scales of ~1°. From the recorded data it is possible to extract atmospheric transmittance within 1% in the whole wide operating band, together with water vapour content and O2 and O3 concentrations. CASPER will allow us to characterize the site for future FIR/mm telescopes. Atmospheric data recorded by CASPER will allow for correction of astrophysical and cosmological observations without the need for telescope-specific procedures and further loss of observation time with more precision in the observations themselves. Calibration of ground-based telescopes on known sky sources is strongly affected by atmospheric absorption. CASPER has this as its primary goal. The spectrometer is based on a Martin-Puplett interferometer. Two data sampling solutions will be performed: phase modulation & fast scan strategy. Sky radiation is collected towards the interferometer by an optical setup that allows the field of view, to explore the full 0° ÷ 90° range of elevation angles. With a low spurious polarization instrument, monitoring of polarized atmospheric contribution will be possible.
Item Type: | Conference or Workshop Item (Paper) |
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Date Type: | Publication |
Status: | Published |
Schools: | Physics and Astronomy |
Subjects: | Q Science > QB Astronomy |
Publisher: | EDP Sciences |
ISBN: | 9782868838353 |
ISSN: | 1633-4760 |
Last Modified: | 21 Oct 2022 10:58 |
URI: | https://orca.cardiff.ac.uk/id/eprint/41928 |
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