HSC development in Taiwan Shiang-Yu Wang ( 王祥宇 ) Institute of Astronomy and Astrophysics Academia Sinica

Background Instrumentation capability is one of the major research topic in ASIAA Development of WIRCAM in CFHT successfully finished in 2005 Long term relationship with Japan Promote collaborations in Asian region Discussion with Subaru began in 2006

Hyper SuprimeCam HSC fits IAA’s interests both in the science and technical sides

Our Role in HSC Mechanical Shutter Filter exchanger CCD emulator? Optical and Mechanical components? Tight space and weight limits of the HSC makes it challenging

Specifications for shutter Time Repeatability : 1% Time Accuracy : 0.01 s Shortest exposure time : 1s Maximum Speed : 800 mm/s Operation Temperature : -10 to 10C Weight ~25Kg 15mm thickness at shutter body and 120mm diameter of the drums

Major activities in IAA Extract system design and specifications form Subaru last June HSC team formed in IAA ARL to be the major contractor for the two systems Fabric material purchased for strength test Regular meeting with ARL

Aeronautical Research Lab. (ARL) Government funded Military research laboratory –Major jet fighter development center in Taiwan Long term collaboration on the SMA project with good partner spirit. Main contractor carrying out the ALMA EA FEIC.

Shutter design

COVER FRAME SCREEN DRUM

SHAFT MOTORSUPPORT COUPLING

SHUTTER DESIGN CONCEPT SHIELD ENCODER ADAPTERSUPPORT

TORQUE METER NUT & WASHER RETAINER BEARING HOUSING SUPPORT SHAFT

IDLE ROLLER CAM FOLLOWER RETAINER SNAP RING FRAME

Shutter weight estimation 1FRAMESH00121AL MOTORHT SHAFTSH00012STEEL SCREENSH00161FIBER COVERSH00151AL ROLLER-IDLESH00132TEFLON DRUM-UPPERSH00044AL COUPLINGFAMM-L402AL TORQUE-METERQWLC-8M2STEEL DRUM-RIGNTSH00032AL OTHER1.342 TOTAL19.137

Projected Milestones Shutter components ready in March Prototype of shutter system to be finished in May. Detailed interface defined in May. System fabrication starts in late Ready for delivery in early 2010.