HiCIAO for WEB

Transcription

1 HiCIAO High Contrast Instrument for the Subaru Next Generation Adaptive Optics for WEB HiCIAO development team (starting member) M. Tamura 1, K. Hodapp 2, R. Suzuki 2,H. Takami 3, L. Abe 1, O. Guyon 3, H. Suto 1, S. Jacobson 2, R. Kandori 1, J. Morino 1, N. Murakami 1, V. Stahlberger 2, A. Tavrov 1, H. Yamada 2, J. Nishikawa 1, N. Ukita 1, J. Hashimoto 1, H. Izumiura 4, M. Hayashi 3, T. Nakajima 1, T. Nishimura 3 1) NAOJ 2) UH Hilo, 3) Subaru Telescope, 4) Okayama

2 Results of Subaru AO Coronagraph Current Cs 36-act. AO + CIAO First dedicated IR coronagraph on 8-m telescopes Disk Morphology Companion searches High-resolution Polarimetry Diversity of proto- Planetary disks Young very low-mass Companion Compact disk around massive YSOs (BN)

3 Cassegrain platform CIAO Concept Warm Cold Telescope AO Module Coronagraph and IR Camera Module Coronagraph Focal masks Pupil stops Alladin II 1k x 1k IR array 36 actuators Cass. focus Alladin II 1k 1k array - Optimized for 2 micron - All in cold cryostat - No differential optics

4 Nasmyth platform HiCIAO Concept Warm Cold Telescope Common Optics + AO Module Coronagraph Module High Contrast Optics Module IR Camera Module 188 actuators AO Future: Complementary MEM DM ( ) Coronagraph Focal masks Pupil stops Differential optics (Wollaston prisms) Camera Hawaii 2-RG2 2k 2k array ASICS Sidecar Controller Filters Common+Differential Wollaston Prism

5 AO Interface Nasmyth Floor HiCIAO Camera AO188 Optical Bench HiCIAO Foreoptics Electronics Racks ~1800 Support Frame ~1500 ~1400

6 Specifications Focus Wavelength Pixel scale Detector Observation modes Field of View Strehl Ratio Coronagraph Filters (as of first light) IR Nasmyth (with AO188) um /pix 2048x2048 HgCdTe (HAWAII-2RG) Direct Imaging (DI) Polarimetric Differential Imaging (PDI) Spectral Differential Imaging (SDI) 20 x20 (DI), 20 x10 (PDI), 5.8 x5.8 (SDI) 0.6 (J), 0.7 (H), 0.8 (K) Occulting mask, Classical Lyot stop J, H, K (BB); CH4 set, [FeII] set (SDI)

7 HiCIAO Specifications in Brief Wavelength Coverage zjhks bands ( micron) Optimized at H band (because of warm optics) Spatial Resolution & Strehl Ratio 0.03 (J), 0.04 (H), (Ks) 0.6(J), 0.7(H), seeing Detection limit H > 24 mag (5 sigma, 1 hour) Contrast Goal 10^4 at ^6 at 1 w/ SDI/PDI modes Observing Modes (all 0.01 / pixel scale) Direct Imaging (DI) High throughput imaging: 20"x20" FOV Polarization Simultaneous Differential Imaging (PSDI) Polarizied source imaging: 10"x20" FOV Spectral Simultaneous Differential Imaging (SSDI) Unpolarized source imaging: 6"x6" FOV All modes with or without coronagraph 1" Performance simulation by Abe

8 Optics Collimator Lyot Stop Camera Common Path Filter Filter & Detector Detector Wollaston Prism Differential Path Filter Lenses were delivered Masks are being proceeded (~beginning of Mar.) Filters will be delivered in mid. Feb. Wollaston prisms are on the fly

9 Mechanics All the mechanisims are controled by Newport XPS controllers. Fundamental operation codes were finished. Cryogenic filter wheel tests were done using a test dewar in Subaru All the cryogenic mechanisms were tested in the HiCIAO cryostat

10 Detector All ASIC functions relevant for HiCIAO have been tested as a part of the characterization effort for the JWST NIRCam instrument. A few observations have been already done using the ASIC and the HAWAII-2RG with ULBCAM on the UH88 telescope. ULBCAM on the UH88 Image taken with HAWAII- 2RG and ASIC

11 Software OBCP (Linux) XPS controllers Windows Framework is established Implementation of the detector software, the motion control software Interface with SOS

12 AO and Nasmyth Interface HiCIAO Fore Optics will be attached to the AO bench via the interface plate for its precise location and to avoid vibration. AO bench flexture tests were done using dummy weights Specifications of the interface plate have been discussed by AO, IRCS, and HiCIAO groups. will be finalized soon. HiCIAO uses same fixed points on the Nasmyth floor as IRCS is using Interface plate with IRCS f-conversion optics and HiCIAO Fore Optics AO bench flexture test Instrument support frame