Translator Disclaimer
28 June 2006 The MCAO wavefront sensing system of LINC-NIRVANA: status report
Author Affiliations +
LINC-NIRVANA is an infrared camera that will work in Fizeau interferometric way at the Large Binocular Telescope (LBT). The two beams that will be combined in the camera are corrected by an MCAO system, aiming to cancel the turbulence in a scientific field of view of 2 arcminutes. The MCAO wavefront sensors will be two for each arm, with the task to sense the atmosphere at two different altitudes (the ground one and a second height variable between a few kilometers and a maximum of 15 kilometers). The first wavefront sensor, namely the Ground layer Wavefront sensor (GWS), will drive the secondary adaptive mirror of LBT, while the second wavefront sensor, namely the Mid High layer Wavefront Sensor (MHWS) will drive a commercial deformable mirror which will also have the possibility to be conjugated to the same altitude of the correspondent wavefront sensor. The entire system is of course duplicated for the two telescopes, and is based on the Multiple Field of View (MFoV) Layer Oriented (LO) technique, having thus different FoV to select the suitable references for the two wavefront sensor: the GWS will use the light of an annular field of view from 2 to 6 arcminutes, while the MHWS will use the central 2 arcminutes part of the FoV. After LINC-NIRVANA has accomplished the final design review, we describe the MFoV wavefront sensing system together with its current status.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.


Status of the NGS adaptive optic system at the MMT...
Proceedings of SPIE (October 25 2004)
ShaneAO an enhanced adaptive optics and IR imaging system...
Proceedings of SPIE (September 13 2012)
Visible MCAO channel for NIRVANA at the LBT
Proceedings of SPIE (February 07 2003)
Update on optical design of adaptive optics system at Lick...
Proceedings of SPIE (February 04 2002)
Upgrade on 61 element adaptive optical system for 1.2 m...
Proceedings of SPIE (October 25 2004)

Back to Top