FOCASProject 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 qualitySchedule 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

Suprime-CamProject 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.

SUBARU Instrument Status and ProspectsHiroshi TERADA

and the members from Science Operation Division

SUBARU USER’S MEETING 2007 NAOJ in Mitaka: 2008/01/30,31

MOIRCSMain 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

52mas camera (J,H,K-bands)

N

E

53” x 53”

Coronagraph mask

AO36Status Operatoinal within S08A with CIAO.Plan No longer available from S08B. CIAO will be opened without AO function.

CISCOStatus No longer available from S07B.Plan Will be transferred to University of Tokyo for the other project.

Decommissioning

HDSStatus Continue stable operation in 2007. To ensure high precision spectroscopy, detailed evaluation and investigation of linearity is on-going.

COMICSStatus Four cold head failures on the imaging side occurred during S07A & B. ⇒ its cause is still under investigation Now stable after replacing all the components related to the cooler.

No Major Status Change

Newly Opening of AO188

New CCD Upgrade

Quantum Efficiency @ -100℃

New CCDs and Dewar

10 1000

2

4

6

Readout Time [sec/2k4k]

Noise [e]

BI1–19–0.5–2Sv 4.7uV/e

CCD+MF2 （measured）

MF2 （measured）

CCD

Mfront2/FDCCD Readout Noise

PRE x4.19CH2

Readout Noise Evaluation

Major Problem and Upgrade of MOIRCS

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.

Schematic view for efficiency shift with different slit position.

Total efficiency of VPH grismsVPH grism (J)

Q.E. 1% Non-Linearity Readout Noise

Ch.1 ~75% ~74,000e- 27.7e-

Ch.2 ~82% ~110,000e- 29.5e-

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.

23” x 23” 20mas camera

JHK JKL’

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

Si Immersion grating

High Resolution Spectrograph UnitTest piece for Si immersion grating and its performance