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

2. 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

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

4. 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

5. 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

8. 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

9. 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.

10. Shutter design

11. COVER FRAME SCREEN DRUM

12. SHAFT MOTORSUPPORT COUPLING

13. SHUTTER DESIGN CONCEPT SHIELD ENCODER ADAPTERSUPPORT

14. TORQUE METER NUT & WASHER RETAINER BEARING HOUSING SUPPORT SHAFT

15. IDLE ROLLER CAM FOLLOWER RETAINER SNAP RING FRAME

16. Shutter weight estimation 1FRAMESH00121AL5.772 2MOTORHT300522.1904.380 3SHAFTSH00012STEEL1.2092.418 4SCREENSH00161FIBER1.800 5COVERSH00151AL1.349 6ROLLER-IDLESH00132TEFLON0.2560.512 7DRUM-UPPERSH00044AL0.2120.848 8COUPLINGFAMM-L402AL0.130.260 9TORQUE-METERQWLC-8M2STEEL0.1280.256 10DRUM-RIGNTSH00032AL0.1000.200 11OTHER1.342 TOTAL19.137

17. 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 2008. Ready for delivery in early 2010.