WP12200: Instrumentation, measurements and modelling Single Star Scidar SSS Feasibility Document: Closed (ELT-TRE-UNI-12200-0001 ) SSS prototype manufacturing: Closed Cross-check SSS/DIMM (partial check closed, extensive check to be planned) 23-Nov-18

SSS Principle Scintillation pattern on a 1.52m telescope Spatio-temporal cross-correlation Between images t apart 23-Nov-18

SSS Feasibility on large telescope 23-Nov-18

SSS feasibility on « small » telescope at Dome C Correlation DIMM/SSS DIMM Seeing AO AO 23-Nov-18

SSS feasibility on « small » telescope: Cn2(h) 21 Altitude (km) Altitude (km) 1  1 hour Cn2(h,t) at Paranal. The vertical axis represents altitudes. The horizontal axis spans over one hour. A lot of turbulence (red) can be seen in the boundary layer and less turbulence in the higher atmosphere with the SSS and a 40cm telescope. 23-Nov-18

SSS feasibility on « small » telescope: V(h) 21 Altitude (km) Altitude (km) 1  1 hour 23-Nov-18

SSS feasibility on « small » telescope at Paranal 23-Nov-18

WP12300: Large scale atmospheric properties (Roberto Ragazzoni) 1.- Large scale wavefront sensing To design and build a very Wide Field (WF)-Sensor to sense the atmosphere on a ~50m scale A single “very wide field” (8’ to 10’) multiple stars WFS From two overlapping fields on two UTs (OWL-based…) to a single one. Segmented FoVs with a further camera for GND detection and removing. Involved institutes: INAF- Padova (design and build the first WFS unit) ESO University of Nice IAC – Grantecan (to build the second WFS unit) 2.- LIDAR for characterisation of boundary layer properties LIDAR developed for measuring boundary layer profiles and evolution, and wind profiles. System is ready for on site measurements, first campaign on summer 2007 at La Palma. 3.- Wavefront spatial properties in large scales Planification of simultaneous campaigns with several facilities and instruments 23-Nov-18

Wide Field Wavefront Sensor Re-assessment of the project in Madrid, May 2nd, 2006 First milestone: Optical Design for an internal Design Review delivered in December 2006. Three options considered (all involving off-the-shelf optical components to make the realization faster): Single Baker Schmidt with very large format CCD Single Baker Schmidt with focal reducer Multiple Refractive Objectives Work Package objectively late Final Design Review is still pending Six months after FDR will be required to manufacture the WFWFS 23-Nov-18

WP12300 LIDAR measurements Aim: To measure boundary layer profiles and evolution, and also wind profiles Upgraded System: Sinchronised measurements in several directions automatised Control software including all tools System tested in different campaigns in urban areas, performance demonstrated System developed to be portable for transport to different sites 1 2 x y z θ1 θ2 ρ Motion direction θ1 θ2 t t+Δt Δρ Δz 23-Nov-18

WP12300 LIDAR measurements Application for measurements scanning Diurnal evolution of planetary boundary layer height 23-Nov-18

WP12300 LIDAR measurements Schedule 2007: ORM: 1/06---6/07 (Back-up: up to 12/07) OT: 8/07---12/07 (Back-up: up to 16/07) Schedule 2008: Paranal: January, exact dates TBC. 23-Nov-18

WP12300 Large Scale turbulence properties: Paranal campaign 2007 Cn2(h), L0(h), L0, r0, tau0,teta0 measurements We foresee an intensive site testing campaign at Paranal in December 2007 with the following instruments: GSM & MOSP (LUAN) UT NAOS (ESO) VLTI – AMBER (ESO/ Obs. Nice) SLODAR (ESO / Durham) C-SCIDAR (ESO / IAC) 23-Nov-18