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In-flight calibration of the Herschel-SPIRE instrument

Swinyard, B. M. and Levenson, L. and Lu, N. and Schulz, B. and Schwartz, A. and Shupe, D. and Xu, C. K. and Zhang, L. (2010) In-flight calibration of the Herschel-SPIRE instrument. Astronomy and Astrophysics, 518 . L4. ISSN 0004-6361. http://resolver.caltech.edu/CaltechAUTHORS:20101124-111407085

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Abstract

SPIRE, the Spectral and Photometric Imaging REceiver, is the Herschel Space Observatory's submillimetre camera and spectrometer. It contains a three-band imaging photometer operating at 250, 350 and 500 μm, and an imaging Fourier-transform spectrometer (FTS) covering 194–671 μm (447-1550 GHz). In this paper we describe the initial approach taken to the absolute calibration of the SPIRE instrument using a combination of the emission from the Herschel telescope itself and the modelled continuum emission from solar system objects and other astronomical targets. We present the photometric, spectroscopic and spatial accuracy that is obtainable in data processed through the “standard” pipelines. The overall photometric accuracy at this stage of the mission is estimated as 15% for the photometer and between 15 and 50% for the spectrometer. However, there remain issues with the photometric accuracy of the spectra of low flux sources in the longest wavelength part of the SPIRE spectrometer band. The spectrometer wavelength accuracy is determined to be better than 1/10th of the line FWHM. The astrometric accuracy in SPIRE maps is found to be 2 arcsec when the latest calibration data are used. The photometric calibration of the SPIRE instrument is currently determined by a combination of uncertainties in the model spectra of the astronomical standards and the data processing methods employed for map and spectrum calibration. Improvements in processing techniques and a better understanding of the instrument performance will lead to the final calibration accuracy of SPIRE being determined only by uncertainties in the models of astronomical standards.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1051/0004-6361/201014605DOIArticle
http://www.aanda.org/index.php?option=com_article&access=doi&doi=10.1051/0004-6361/201014605&Itemid=129PublisherArticle
ORCID:
AuthorORCID
Lu, N.0000-0002-8948-1044
Shupe, D.0000-0003-4401-0430
Xu, C. K.0000-0002-1588-6700
Additional Information:© 2010 ESO. Received 31 March 2010; Accepted 3 May 2010; Published online 16 July 2010. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with participation from NASA. SPIRE has been developed by a consortium of institutes led by Cardiff Univ. (UK) and including Univ. Lethbridge (Canada); NAOC (China); CEA, LAM (France); IFSI, Univ. Padua (Italy); IAC (Spain); Stockholm Observatory (Sweden); Imperial College London, RAL, UCL-MSSL, UKATC, Univ. Sussex (UK); Caltech, JPL, NHSC, Univ. Colorado (USA). This development has been supported by national funding agencies: CSA (Canada); NAOC (China); CEA, CNES, CNRS (France); ASI (Italy); MCINN (Spain); SNSB (Sweden); STFC (UK); and NASA (USA).
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
Canadian Space Agency (CSA) UNSPECIFIED
National Astronomical Observatories, Chinese Academy of Sciences (NAOC) UNSPECIFIED
Commissariat à l’Energie Atomique (CEA)UNSPECIFIED
Centre National d'Études Spatiales (CNES)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Agenzia Spaziale Italiana (ASI) UNSPECIFIED
Ministerio de Ciencia e Innovación (MCINN)UNSPECIFIED
Swedish National Space Board (SNSB)UNSPECIFIED
Science and Technology Facilities Council (STFC)UNSPECIFIED
NASAUNSPECIFIED
Subject Keywords:instrumentation: photometers; instrumentation: spectrographs; space vehicles: instruments
Record Number:CaltechAUTHORS:20101124-111407085
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20101124-111407085
Official Citation:In-flight calibration of the Herschel-SPIRE instrument B. M. Swinyard, P. Ade, J.-P. Baluteau, H. Aussel, M. J. Barlow, G. J. Bendo, D. Benielli, J. Bock, D. Brisbin, A. Conley, L. Conversi, A. Dowell, D. Dowell, M. Ferlet, T. Fulton, J. Glenn, A. Glauser, D. Griffin, M. Griffin, S. Guest, P. Imhof, K. Isaak, S. Jones, K. King, S. Leeks, L. Levenson, T. L. Lim, N. Lu, G. Makiwa, D. Naylor, H. Nguyen, S. Oliver, P. Panuzzo, A. Papageorgiou, C. Pearson, M. Pohlen, E. Polehampton, D. Pouliquen, D. Rigopoulou, S. Ronayette, H. Roussel, A. Rykala, G. Savini, B. Schulz, A. Schwartz, D. Shupe, B. Sibthorpe, S. Sidher, A. J. Smith, L. Spencer, M. Trichas, H. Triou, I. Valtchanov, R. Wesson, A. Woodcraft, C. K. Xu, M. Zemcov and L. Zhang A&A 518 L4 (2010) DOI: 10.1051/0004-6361/201014605
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21023
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:29 Nov 2010 17:22
Last Modified:12 Jul 2019 21:42

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