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

SUPPORT

TORQUE METER

NUT & WASHER

RETAINER

BEARING

HOUSING

SUPPORT

SHAFT

IDLE ROLLER

CAM FOLLOWER

RETAINER

SNAP RING

FRAME

Shutter weight estimation1 FRAME SH0012 1 AL 5.772 5.772

2 MOTOR HT3005 2 2.190 4.380

3 SHAFT SH0001 2 STEEL 1.209 2.418

4 SCREEN SH0016 1 FIBER 1.800 1.800

5 COVER SH0015 1 AL 1.349 1.349

6 ROLLER-IDLE SH0013 2 TEFLON 0.256 0.512

7 DRUM-UPPER SH0004 4 AL 0.212 0.848

8 COUPLING FAMM-L40 2 AL 0.13 0.260

9 TORQUE-METER QWLC-8M 2 STEEL 0.128 0.256

10 DRUM-RIGNT SH0003 2 AL 0.100 0.200

11 OTHER 1.342

TOTAL 19.137

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 2008.

• Ready for delivery in early 2010.