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

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

3. SSS Feasibility on large telescope
23-Nov-18

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

5. 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

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

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

8. 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

9. 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

10. 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

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

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

13. 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