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Proceedings Paper

The GRAVITY/VLTI acquisition camera software
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Paper Abstract

The acquisition camera for the GRAVITY/VLTI instrument implements four functions: a) field imager: science field imaging, tip-tilt; b) pupil tracker: telescope pupil lateral and longitudinal positions; c) pupil imager: telescope pupil imaging and d) aberration sensor: The VLTI beam higher order aberrations measurement. We present the dedicated algorithms that simulate the GRAVITY acquisition camera detector measurements considering the realistic imaging conditions, complemented by the pipeline used to extract the data. The data reduction procedure was tested with real aberrations at the VLTI lab and reconstructed back accurately. The acquisition camera software undertakes the measurements simultaneously for all four AT/UTs in 1 s. The measured parameters are updated in the instrument online database. The data reduction software uses the ESO Common Library for Image Processing (CLIP), integrated in to the ESO VLT software environment.

Paper Details

Date Published: 24 July 2014
PDF: 13 pages
Proc. SPIE 9146, Optical and Infrared Interferometry IV, 91462C (24 July 2014); doi: 10.1117/12.2055831
Show Author Affiliations
Narsireddy Anugu, Univ. do Porto (Portugal)
Paulo J. V. Garcia, Univ. do Porto (Portugal)
Ekkehard Wieprecht, Max-Planck-Institut für extraterrestrische Physik (Germany)
Antonio Amorim, Fundacão da Faculdade de Ciências da Univ. de Lisboa (Portugal)
Leonard Burtscher, Max-Planck-Institut für extraterrestrische Physik (Germany)
Thomas Ott, Max-Planck-Institut für extraterrestrische Physik (Germany)
Paulo Gordo, Fundacão da Faculdade de Ciências da Univ. de Lisboa (Portugal)
Frank Eisenhauer, Max-Planck-Institut für extraterrestrische Physik (Germany)
Guy Perrin, Observatoire de Paris à Meudon (France)
Wolfgang Brandner, Max-Planck-Institut für Astronomie (Germany)
Christian Straubmeier, Univ. zu Köln (Germany)
Karine Perraut, Institut de Planétologie et d’Astrophysique de Grenoble (France)


Published in SPIE Proceedings Vol. 9146:
Optical and Infrared Interferometry IV
Jayadev K. Rajagopal; Michelle J. Creech-Eakman; Fabien Malbet, Editor(s)

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