Share Email Print
cover

Proceedings Paper

SAM: a facility GLAO instrument
Author(s): Andrei Tokovinin; Roberto Tighe; Patricio Schurter; Rolando Cantarutti; Nicole van der Bliek; Manuel Martinez; Eduardo Mondaca; Andres Montane
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The SOAR Adaptive Module (SAM) will compensate ground-layer atmospheric turbulence, improving image resolution in the visible over a 3'x3' field and increasing light concentration for spectroscopy. Ground layer compensation will be achieved by means of a UV (355nm) laser guide star (LGS), imaged at a nominal distance of 10km from the telescope, coupled to a Shack-Hartmann wave front sensor (WFS) and a bimorph deformable mirror. Unique features of SAM are: access to a collimated space for filters and ADC, two science foci, built-in turbulence simulator, flexibility to operate at LGS distances of 7 to 14 km as well as with natural guide stars (NGS), a novel APD-based two-arm tip-tilt guider, a laser launch telescope with active control on both pointing and beam transfer. We describe the main features of the design, as well as operational aspects. The goal is to produce a simple and reliable ground layer adaptive optics system. The main AO module is now in the integration and testing stage; the real-time software, the WFS, and the tip-tilt guider prototype have been tested. SAM commissioning in NGS mode is expected in 2009; the LGS mode will be completed in 2010.

Paper Details

Date Published: 14 July 2008
PDF: 11 pages
Proc. SPIE 7015, Adaptive Optics Systems, 70154C (14 July 2008); doi: 10.1117/12.788015
Show Author Affiliations
Andrei Tokovinin, Cerro Tololo Inter-American Observatory (Chile)
Roberto Tighe, Cerro Tololo Inter-American Observatory (Chile)
Patricio Schurter, Cerro Tololo Inter-American Observatory (Chile)
Rolando Cantarutti, Cerro Tololo Inter-American Observatory (Chile)
Nicole van der Bliek, Cerro Tololo Inter-American Observatory (Chile)
Manuel Martinez, Cerro Tololo Inter-American Observatory (Chile)
Eduardo Mondaca, Cerro Tololo Inter-American Observatory (Chile)
Andres Montane, Cerro Tololo Inter-American Observatory (Chile)


Published in SPIE Proceedings Vol. 7015:
Adaptive Optics Systems
Norbert Hubin; Claire E. Max; Peter L. Wizinowich, Editor(s)

© SPIE. Terms of Use
Back to Top