Pointing plans NL (SST-CHEC) David & Remko GRAPPA INSTITUTE Gravitation AstroParticle Physics Amsterdam David Berge University of Amsterdam and Nikhef http://grappa.science.uva.nl

Introduction CTA requirements: 5’’ post-calibration telescope pointing precision A challenge with guide sky CCDs What’s more, for dual mirror SSTs, cannot view the sky and the Cherenkov camera lid from the same location Alternative solution (see Remko’s talk for the details): measure star positions with Cherenkov camera Real-time solution for pointing reconstruction! Pointing discussion, 29 July 2013

Discussion today Exchange of ideas, towards a common discussion Interest on our side to extend from 2M-SSTs to MSTs To be discussed, depends on your views Prototype plans, NL Modified camera electronics within three months Lab tests Amsterdam with a full slice of CHEC (2M-SST camera) Eventually mount prototype on GATE 2M-SST prototype to measure star light Prototype plans MST? NB: I hear that there are discussions to move pointing reconstruction into the calibration working group (maybe first session in Warsaw) Pointing discussion, 29 July 2013