Surface adjustment of the IRAM 30 m radio telescope
Surface adjustment of the IRAM 30 m radio telescope
- Author(s): D. Morris ; M. Bremer ; G. Butin ; M. Carter ; A. Greve ; J.W. Lamb ; B. Lazareff ; J. Lopez-Perez ; F. Mattiocco ; J. Penalver ; C. Thum
- DOI: 10.1049/iet-map:20080044
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- Author(s): D. Morris 1, 2 ; M. Bremer 1 ; G. Butin 1 ; M. Carter 1 ; A. Greve 1 ; J.W. Lamb 1, 3 ; B. Lazareff 1 ; J. Lopez-Perez 1, 4 ; F. Mattiocco 1 ; J. Penalver 1 ; C. Thum 1
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View affiliations
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Affiliations:
1: Institut de Radioastronomie Millimetrique (IRAM), St Martin d'Heres, France
2: Raman Research Institute, Bangalore, India
3: OVRO, California Institute of Technology, Big Pine, USA
4: OVRO, OAN, Centro Astronomico de Yebes, Guadalajara, Spain
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Affiliations:
1: Institut de Radioastronomie Millimetrique (IRAM), St Martin d'Heres, France
- Source:
Volume 3, Issue 1,
February 2009,
p.
99 – 108
DOI: 10.1049/iet-map:20080044 , Print ISSN 1751-8725, Online ISSN 1751-8733
The techniques used to set and stabilise the surface of the IRAM 30 m radio telescope to a final root mean square accuracy of about 50 µm are described. This involved both phase retrieval and phase coherent holography using a variety of radiation sources at several frequencies. A finite-element model was utilised in improving the temperature control system for the telescope structure. The factors influencing the ultimate surface accuracy are discussed.
Inspec keywords: radiotelescopes; temperature control; finite element analysis; holography
Other keywords:
Subjects: Radioastronomical techniques and equipment; Holography; Finite element analysis
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