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Proceedings Paper

The ArTeMiS wide-field sub-millimeter camera: preliminary on-sky performance at 350 microns
Author(s): Vincent Revéret; Philippe André; Jean Le Pennec; Michel Talvard; Patrick Agnèse; Agnès Arnaud; Laurent Clerc; Carlos de Breuck; Jean-Charles Cigna; Cyrille Delisle; Eric Doumayrou; Lionel Duband; Didier Dubreuil; Luc Dumaye; Eric Ercolani; Pascal Gallais; Elodie Groult; Thierry Jourdan; Bernadette Leriche; Bruno Maffei; Michel Lortholary; Jérôme Martignac; Wilfried Rabaud; Johan Relland; Louis Rodriguez; Aurélie Vandeneynde; François Visticot
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Paper Abstract

ArTeMiS is a wide-field submillimeter camera operating at three wavelengths simultaneously (200, 350 and 450 μm). A preliminary version of the instrument equipped with the 350 μm focal plane, has been successfully installed and tested on APEX telescope in Chile during the 2013 and 2014 austral winters. This instrument is developed by CEA (Saclay and Grenoble, France), IAS (France) and University of Manchester (UK) in collaboration with ESO. We introduce the mechanical and optical design, as well as the cryogenics and electronics of the ArTéMiS camera. ArTeMiS detectors consist in Si:P:B bolometers arranged in 16×18 sub-arrays operating at 300 mK. These detectors are similar to the ones developed for the Herschel PACS photometer but they are adapted to the high optical load encountered at APEX site. Ultimately, ArTeMiS will contain 4 sub-arrays at 200 μm and 2×8 sub-arrays at 350 and 450 μm. We show preliminary lab measurements like the responsivity of the instrument to hot and cold loads illumination and NEP calculation. Details on the on-sky commissioning runs made in 2013 and 2014 at APEX are shown. We used planets (Mars, Saturn, Uranus) to determine the flat-field and to get the flux calibration. A pointing model was established in the first days of the runs. The average relative pointing accuracy is 3 arcsec. The beam at 350 μm has been estimated to be 8.5 arcsec, which is in good agreement with the beam of the 12 m APEX dish. Several observing modes have been tested, like “On- The-Fly” for beam-maps or large maps, spirals or raster of spirals for compact sources. With this preliminary version of ArTeMiS, we concluded that the mapping speed is already more than 5 times better than the previous 350 μm instrument at APEX. The median NEFD at 350 μm is 600 mJy.s1/2, with best values at 300 mJy.s1/2. The complete instrument with 5760 pixels and optimized settings will be installed during the first half of 2015.

Paper Details

Date Published: 23 July 2014
PDF: 11 pages
Proc. SPIE 9153, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII, 915305 (23 July 2014); doi: 10.1117/12.2055985
Show Author Affiliations
Vincent Revéret, AIM Lab., CNRS, Paris Saclay (France)
IRFU-CEA (France)
Philippe André, AIM Lab., CNRS, Paris Saclay (France)
IRFU-CEA (France)
Jean Le Pennec, AIM Lab., CNRS, Paris Saclay (France)
IRFU-CEA (France)
Michel Talvard, AIM Lab., CNRS, Paris Saclay (France)
IRFU-CEA (France)
Patrick Agnèse, Lab. d'Electronique et Technologie de l'Information, CEA (France)
Agnès Arnaud, Lab. d'Electronique et Technologie de l'Information, CEA (France)
Laurent Clerc, Service des Basses Températures, CEA (France)
Carlos de Breuck, European Southern Observatory (Germany)
Jean-Charles Cigna, Lab. d'Electronique et Technologie de l'Information, CEA (France)
Cyrille Delisle, AIM Lab., CNRS, Paris Saclay (France)
IRFU-CEA (France)
Eric Doumayrou, AIM Lab., CNRS, Paris Saclay (France)
IRFU-CEA (France)
Lionel Duband, Service des Basses Températures, CEA (France)
Didier Dubreuil, AIM Lab., CNRS, Paris Saclay (France)
IRFU-CEA (France)
Luc Dumaye, AIM Lab., CNRS, Paris Saclay (France)
IRFU-CEA (France)
Eric Ercolani, Service des Basses Températures, CEA (France)
Pascal Gallais, AIM Lab., CNRS, Paris Saclay (France)
IRFU-CEA (France)
Elodie Groult, AIM Lab., CNRS, Paris Saclay (France)
IRFU-CEA (France)
Thierry Jourdan, Service des Basses Températures, CEA (France)
Bernadette Leriche, Institut d'Astrophysique Spatiale, CNRS, Univ. Paris Sud (France)
Bruno Maffei, The Univ. of Manchester (United Kingdom)
Michel Lortholary, AIM Lab., CNRS, Paris Saclay (France)
IRFU-CEA (France)
Jérôme Martignac, AIM Lab., CNRS, Paris Saclay (France)
IRFU-CEA (France)
Wilfried Rabaud, Lab. d'Electronique et Technologie de l'Information, CEA (France)
Johan Relland, Commissariat à l'Énergie Atomique (France)
Louis Rodriguez, AIM Lab., CNRS, Paris Saclay (France)
Aurélie Vandeneynde, Lab. d'Electronique et Technologie de l'Information, CEA (France)
François Visticot, AIM Lab., CNRS, Paris Saclay (France)


Published in SPIE Proceedings Vol. 9153:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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