DocumentCode
271818
Title
FLASH 
—A Dual-Channel Wide-Band Spectrometer for APEX
Author
Klein, Thomas ; Ciechanowicz, Miroslaw ; Leinz, Christian ; Heyminck, Stefan ; Güsten, Rolf ; Kasemann, Christoph ; Wunsch, Joachim ; Maier, David ; Sekimoto, Yutaro
Author_Institution
Eur. Southern Obs., Santiago, Chile
Volume
4
Issue
5
fYear
2014
fDate
Sept. 2014
Firstpage
588
Lastpage
596
Abstract
We report on the design and on-site performance of the recently upgraded FLASH + instrument operated at the APEX telescope in the Chilean Atacama desert in 5100 m altitude. The dual-channel receiver allows parallel observations in the atmospheric submillimeter windows between 268 and 516 GHz. A signal of in total 16 GHz is processed simultaneously. Equipped with state-of-the-art sideband separating mixers (spin-off developments from the ALMA bands 7 and 8), its outstanding on-sky performance makes FLASH + a most efficient spectral line mapping machine. Operation is fully automated and allows flexible remote observations from the APEX base in San Pedro de Atacama.
Keywords
radiotelescopes; spectrometers; APEX telescope; Chilean Atacama desert; FLASH+ instrument; San Pedro de Atacama; atmospheric submillimeter windows; dual-channel receiver; dual-channel wide-band spectrometer; frequency 268 GHz to 516 GHz; parallel observations; state-of-the-art sideband separating mixers; Amplitude modulation; Mixers; Noise; Radio frequency; Telescopes; Tuning; Astronomical instrumentation; heterodyne receiver; submillimeter (sub-mm) telescope;
fLanguage
English
Journal_Title
Terahertz Science and Technology, IEEE Transactions on
Publisher
ieee
ISSN
2156-342X
Type
jour
DOI
10.1109/TTHZ.2014.2342498
Filename
6877750
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