First on-sky results with ARGOS at LBT

One year and an half after ARGOS first light, the Large Binocular Telescope (LBT) laser guided ground-layer adaptive optics (GLAO) system has been operated on both sides of the LBT. The system fulfills the GLAO promise and typically delivers an improvement by a factor of 2 in FWHM over the 4'×4' field of view of both Luci instruments, the two near-infrared imagers and multi-object spectrographs. In this paper, we report on the first on-sky results and analyze the performances based on the data collected so far. We also discuss adaptive optics procedures and the joint operations with Luci for science observations.

[1]  Lorenzo Busoni,et al.  Practical experience with test-driven development during commissioning of the multi-star AO system ARGOS , 2014, Astronomical Telescopes and Instrumentation.

[2]  Lorenzo Busoni,et al.  Integration and laboratory characterization of the ARGOS laser guide star wavefront sensors , 2013 .

[3]  W. A. Coles,et al.  A Radio System for Avoiding Illuminating Aircraft with a Laser Beam , 2009, 0910.5685.

[4]  Andreas Quirrenbach,et al.  Status of the ARGOS project , 2014, Astronomical Telescopes and Instrumentation.

[5]  Lorenzo Busoni,et al.  Pre-shipment test of the ARGOS laser guide star wavefront sensor , 2014, Astronomical Telescopes and Instrumentation.

[6]  S. Rabien,et al.  Vibration control for the ARGOS laser launch path , 2012, Other Conferences.

[7]  P. Stetson.  DAOPHOT: A COMPUTER PROGRAM FOR CROWDED-FIELD STELLAR PHOTOMETRY , 1987 .

[8]  D. Gavel,et al.  Tip-tilt compensation : resolution limits for ground-based telescopes using laser guide star adaptive optics , 1993 .

[9]  J. Borelli,et al.  Service-oriented architecture for the ARGOS instrument control software , 2012, Other Conferences.

[10]  S. Rabien,et al.  ARGOS laser system mechanical design , 2014, Astronomical Telescopes and Instrumentation.

[11]  Lorenzo Busoni,et al.  Final design of the wavefront sensor unit for ARGOS, the LBT's LGS facility , 2010, Astronomical Telescopes + Instrumentation.

[12]  S. Rabien,et al.  ARGOS wavefront sensing: from detection to correction , 2014, Astronomical Telescopes and Instrumentation.

[13]  Simone Esposito,et al.  The ARGOS laser system: green light for ground layer adaptive optics at the LBT , 2014, Astronomical Telescopes and Instrumentation.

[14]  Walter Seifert,et al.  LUCIFER: a Multi-Mode NIR Instrument for the LBT , 2003, SPIE Astronomical Telescopes + Instrumentation.

[15]  Prasanth H. Nair,et al.  Astropy: A community Python package for astronomy , 2013, 1307.6212.

[16]  Lorenzo Busoni,et al.  Implementation of SLODAR atmospheric turbulence profiling to the ARGOS system , 2014, Astronomical Telescopes and Instrumentation.

[17]  G. Rahmer,et al.  Commissioning of ARGOS at LBT: adaptive optics procedures , 2015 .

[18]  Lorenzo Busoni,et al.  First Results of the Ground Layer Adaptive Optics System ARGOS - eScholarship , 2015 .

[19]  Julian C. Christou,et al.  Aircraft avoidance for laser propagation at the Large Binocular Telescope Observatory: life under a busy airspace , 2016, Astronomical Telescopes + Instrumentation.