WP05000

The workpackage WP05000 and its subworkpackages sWP05100, sWP05200, sWP05300, sWP05400, and sWP05500 are responsible for the telescope mechanics. 

WP05000 led by KIS coordinates the design of the telescope optomechanics in compliance with general project methodology, providing feedback to the project system engineering WP03000 and managing WP01000.It defines technical requirements for the optomechanical subsystems from the SRD (WP02000), the System Specification (WP03000) and telescope optical design (WP04000). It leads optomechanics system analysis, thermal analysis and overall cost & manufacturing analysis. It also contributes to the general project plan and financial budget (telescope optomechanics part).

The different subworkpackages provide periodically information to the sWP05000. Their main tasks are to:

-  define the alternatives of their subsystems in phase I of the conceptual design study,

-  lead the trade-off analysis of design alternatives in phase II,

-  specify the design and lead the analysis corresponding for the selected solution in phase III.

• sWP05100, led by KIS, produces the telescope structure design in accordance with  the optomechanical specification.It characterizes the telescope structure under the thermal point of view, in order to predict the effect of heating in terms of misalignment of the main optical components. It characterizes gravity effects and wind drag. It defines the bearings, motors and encoders for the main telescope axes. It also defines the transfer optics. Other sWP05100 participants are KIS, MTM, ROTH, FLEND, SRS and IDOM.

• sWP05200, led by KIS, is in charge of the primary mirror M1 optomechanics including substrate, support system & actuators and thermal control. It investigates different mirror materials and alternatives cooling systems.Other sWP05200 participants are THEMIS and SRS.

• sWP05300, led by UToV, provides the heat rejector /stop design in compliance with telescope optical (WP04000) and optomechanical design, the heat rejector support design and the thermal hydraulic design of a field stop aimed to remove most of the light reflected by M1. The sWP05300 participant is SRS. 

• sWP05400, led by IAC, is responsible for the secondary mirror M2, including mirror substrate and mount, drives, spiders and thermal control for the mirror (its cooling system may be shared with the heat rejector, in collaboration with sWP05300) and actuators. Other sWP05400 participants are THEMIS and NTE.

• sWP05500 led by MPG defines the coating for the telescope optical surfaces (mirrors, refractive elements, polarization optics, etc...). It investigates procedures and required facilities to apply coating before telescope assembly and to re-apply coating during telescope operation. It studies the polarization properties of different coatings and investigate their influence on the polarimetric efficiency of the telescope. The sWP05500 participant is THEMIS.