3 August 2016 Performance updates of HAWK-I and preparation for the commissioning of the system GRAAL+HAWK-I
Author Affiliations +
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.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Pascale Hibon, Pascale Hibon, Jerome Paufique, Jerome Paufique, Harald Kuntschner, Harald Kuntschner, Danuta Dobrzycka, Danuta Dobrzycka, Miska Le Louarn, Miska Le Louarn, Elena Valenti, Elena Valenti, Mark Neeser, Mark Neeser, Emanuela Pompei, Emanuela Pompei, Robin Arsenault, Robin Arsenault, Ralf Siebenmorgen, Ralf Siebenmorgen, Pierre-Yves Madec, Pierre-Yves Madec, Monika Petr-Gotzens, Monika Petr-Gotzens, Carlos La Fuente, Carlos La Fuente, Josefina Urrutia, Josefina Urrutia, Javier Valenzuela, Javier Valenzuela, Roberto Castillo, Roberto Castillo, Pedro Baksai, Pedro Baksai, Cesar Enrique Garcia Dabo, Cesar Enrique Garcia Dabo, Andreas Jost, Andreas Jost, Javier Argomedo, Javier Argomedo, Johann Kolb, Johann Kolb, Mario Kiekebusch, Mario Kiekebusch, Norbert Hubin, Norbert Hubin, Philippe Duhoux, Philippe Duhoux, Ralf Dieter Conzelmann, Ralf Dieter Conzelmann, Robert Donaldson, Robert Donaldson, Sebastien Tordo, Sebastien Tordo, Stefan Huber, Stefan Huber, "Performance updates of HAWK-I and preparation for the commissioning of the system GRAAL+HAWK-I", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99080F (3 August 2016); doi: 10.1117/12.2231305; https://doi.org/10.1117/12.2231305


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