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arXiv · 1607.05575

Increasing the sensitivity of a Shack-Hartmann sensor

Markus Kasper·Douglas Looze·Stefan Hippler·Ric Davies·Andreas Glindemann
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Abstract

The Max-Planck institutes for astronomy (MPIA) and for extraterrestrial physics (MPE) run an adaptive optics (AO) system with a laser guide star at the 3.5 m telescope on Calar Alto, Spain. This system, called ALFA, produces now scientific results and works ex- cellent with natural guide stars (NGS) as faint as 13th magnitude in R-band. The ultimate goal however is to achieve similar performances with the laser guide star (LGS) which is faint and extended. We introduce the Shack-Hartmann wavefront sensor implemented in ALFA and present our efforts in increasing its sensitivity by using advanced centroiding and wavefront reconstruction algorithms.

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Markus Kasper, Douglas Looze, Stefan Hippler, Ric Davies, Andreas Glindemann. 2016-07-19. Increasing the sensitivity of a Shack-Hartmann sensor. https://arxiv.org/abs/1607.05575

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