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Proceedings Paper

Performance updates of HAWK-I and preparation for the commissioning of the system GRAAL+HAWK-I
Author(s): Pascale Hibon; Jerome Paufique; Harald Kuntschner; Danuta Dobrzycka; Miska Le Louarn; Elena Valenti; Mark Neeser; Emanuela Pompei; Robin Arsenault; Ralf Siebenmorgen; Pierre-Yves Madec; Monika Petr-Gotzens; Carlos La Fuente; Josefina Urrutia; Javier Valenzuela; Roberto Castillo; Pedro Baksai; Cesar Enrique Garcia Dabo; Andreas Jost; Javier Argomedo; Johann Kolb; Mario Kiekebusch; Norbert Hubin; Philippe Duhoux; Ralf Dieter Conzelmann; Robert Donaldson; Sebastien Tordo; Stefan Huber
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Paper Abstract

The High Acuity Wide field K-band Imager (HAWK-I) instrument is a cryogenic wide field imager operating in the wavelength range 0.9 to 2.5 microns. It has been in operations since 2007 on the UT4 at the Very Large Telescope Observatory in seeing-limited mode. In 2017-2018, GRound Layer Adaptive optics Assisted by Lasers module (GRAAL) will be in operation and the system GRAAL+HAWK-I will be commissioned. It will allow: deeper exposures for nearly point-source objects, or shorter exposure times for reaching the same magnitude, and/or deeper detection limiting magnitude. With GRAAL, HAWK-I will operate more than 80% of the time with an equivalent K-band seeing of 0.55" (instead of 0.7" without GRAAL). GRAAL is already installed and the operations without adaptive optics were commissioned in 2015. We discuss here the latest updates on performance from HAWK-I without Adaptive Optics (AO) and the preparation for the commissioning of the system GRAAL+HAWK-I.

Paper Details

Date Published: 3 August 2016
PDF: 12 pages
Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99080F (3 August 2016); doi: 10.1117/12.2231305
Show Author Affiliations
Pascale Hibon, European Southern Observatory (Chile)
Jerome Paufique, European Southern Observatory (Germany)
Harald Kuntschner, European Southern Observatory (Germany)
Danuta Dobrzycka, European Southern Observatory (Germany)
Miska Le Louarn, European Southern Observatory (Germany)
Elena Valenti, European Southern Observatory (Germany)
Mark Neeser, European Southern Observatory (Germany)
Emanuela Pompei, European Southern Observatory (Chile)
Robin Arsenault, European Southern Observatory (Germany)
Ralf Siebenmorgen, European Southern Observatory (Germany)
European Southern Observatory (Chile)
Pierre-Yves Madec, European Southern Observatory (Germany)
Monika Petr-Gotzens, European Southern Observatory (Germany)
Carlos La Fuente, European Southern Observatory (Chile)
Josefina Urrutia, European Southern Observatory (Chile)
Javier Valenzuela, European Southern Observatory (Chile)
Roberto Castillo, European Southern Observatory (Chile)
Pedro Baksai, European Southern Observatory (Chile)
Cesar Enrique Garcia Dabo, European Southern Observatory (Germany)
Andreas Jost, European Southern Observatory (Germany)
Javier Argomedo, European Southern Observatory (Germany)
Johann Kolb, European Southern Observatory (Germany)
Mario Kiekebusch, European Southern Observatory (Germany)
Norbert Hubin, European Southern Observatory (Germany)
Philippe Duhoux, European Southern Observatory (Chile)
European Southern Observatory (Germany)
Ralf Dieter Conzelmann, European Southern Observatory (Germany)
European Southern Observatory (Chile)
Robert Donaldson, European Southern Observatory (Germany)
Sebastien Tordo, European Southern Observatory (Germany)
Stefan Huber, European Southern Observatory (Germany)


Published in SPIE Proceedings Vol. 9908:
Ground-based and Airborne Instrumentation for Astronomy VI
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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