475 citations · 2.5k across the 73 of their papers we have counts for
3 papers · 2 filters
Sterrekundig Instituut Utrecht: The Last Years
Christoph U. Keller
I describe the last years of the 370-year long life of the Sterrekundig Instituut Utrecht, which was the second-oldest university observatory in the world and was closed in early 2…
M&m's: An error budget and performance simulator code for polarimetric systems
Maria de Juan Ovelar, Frans Snik, Christoph U. Keller
Although different approaches to model a polarimeter's accuracy have been described before, a complete error budgeting tool for polarimetric systems has not been yet developed. Bas…
Extremely fast focal-plane wavefront sensing for extreme adaptive optics
Christoph U. Keller, Visa Korkiakoski, Niek Doelman +3
We present a promising approach to the extremely fast sensing and correction of small wavefront errors in adaptive optics systems. As our algorithm's computational complexity is ro…