FOCAS Project Status Purchase of CCD chips is on-going.

1. Dark pattern (600s): The data were taken with NDUMMYREAD=2 option under 8-times multi-sampling. The image is displayed with the range of 0-512 ADU. Quantum Efficiency @ -100℃ New CCDs and Dewar Linearity measurement for Channel-1: Dome image in K-continuum filter with NDUMMYREAD=2 is used. The residual from the linear fitting is shown. The conversion factor for Ch.1 is 2.95 e-/ADU. E N Readout Noise Evaluation 52mas camera (J,H,K-bands) 53” x 53” Schematic view for efficiency shift with different slit position. Total efficiency of VPH grisms JHK JKL’ 20mas camera 23” x 23” Decommissioning AO36 Status Operatoinal within S08A with CIAO. Plan No longer available from S08B. CIAO will be opened without AO function. CISCO Status No longer available from S07B. Plan Will be transferred to University of Tokyo for the other project. SUBARU Instrument Status and Prospects Hiroshi TERADA and the members from Science Operation Division New CCD Upgrade Major Problem and Upgrade of MOIRCS Suprime-Cam Project Status Final evaluation and performance confirmation is on-going Readout time: 20sec (detailed tuning planned) Readout noise: ~5e- Preparation done for testing on Hilo simulator Schedule Plan 2008 Early Jun Start to replace into the new CCDs system after the last observing run. 2008 Late July Engineering run For up-to-date detailed information, please refer to http://subarutelescope.org/Observing/Instruments/SCam/upgrade.html. MOIRCS Main Issue Operating Engineering grade array on Channel-1 due to array problem. Characteristics of Channel-1 array ■Ring shaped anomaly on dark frame High dark current ( ~20e- / sec) High “reset anomaly” for the first image High noise level and latents ■Sensitivity, linearity, readout noise As long as the anomaly region is avoided, Note Although performance level of the normal regions is as good as Channel-2, the anomaly region spreads over almost the entire array. Therefore, special caution should be paid if Channel-1 data is used. For more detail information, please refer to http://subarutelescope.org/Observing/Instruments/MOIRCS/chip1info.html. Upgrade High Dispersion VPH Grisms (R=3,000 @ J- and H-bands) Will be open to public use from S08B (limited number of proposals) Note that the sensitivity curve highly depends on the slit position FOCAS Project Status Purchase of CCD chips is on-going. CCDs will be the same as the ones for Hyper-SuprimeCam. Thickness of the depletion layer => TBD (200um or 300um) ※ t300um: better sensitivity, less fringe in red, but worse image quality Schedule Plan 2008/05,06: Delivery of New CCDs --2008/09: Evaluation of the new CCDs & fabrication of new dewar --2009/03: Assembly, control software check, and laboratory test --2009/08: Engineering run VPH grism (J) Newly Opening of AO188 IRCS+AO188 Status Will be open from S08B (Shared risk) with limited nights, proposals, and functions ImageRotator in AO188 is brand-new. ⇒ Caution needed for image rotation. Prospects ■Open after S09A Finer pixel scale (12.5mas/pix; >1.8um) Coronagraph mask (0”.2, 0”.5, 0”.8) Polarimetry (0.9-5.5um) ■ Recoating ImageRotator at NsIR ⇒ Better sensitivity for IRCS @ thermal band High Resolution Upgrade Status Ion beam dry-etching method established for Si immersion grating F-conversion Optics Coronagraph mask Si Immersion grating High Resolution Spectrograph Unit Test piece for Si immersion grating and its performance No Major Status Change HDS Status Continue stable operation in 2007. To ensure high precision spectroscopy, detailed evaluation and investigation of linearity is on-going. COMICS Status Four cold head failures on the imaging side occurred during S07A & B. ⇒ its cause is still under investigation Now stableafter replacing all the components related to the cooler. SUBARU USER’S MEETING 2007 NAOJ in Mitaka: 2008/01/30,31