Camera Status David Elmore October 2010 ATST SWG

Camera Status David Elmore October 2010 ATST SWG 1

ATST Camera Facility ATST provides cameras for all systems • Ensures data are compatible with Data Handling System • Ensures camera control is achieved within ATST Common Services Framework • Ensures synchronization with polarization modulators or other devices • Maximizes commonality of software and hardware

Camera Requirements • ISRDs – SPEC-0054 VBI – SPEC-0055 Vi. SP – SPEC-0056 Cryo-NIRSP – SPEC-0057 VTF – SPEC-0067 DL-NIRSP • Reports – RPT-0038 VBI – RPT-0039 Vi. SP

Camera Requirements • SPEC-0100 Visible Cameras • SPEC-0101 Infrared Cameras • SPEC-0102 Charge-Caching Cameras • SPEC-0088 Camera Systems Software

FDR: Acquisition • Purchase off-the-shelf cameras that best meet specification as late as possible in construction • Pursue external opportunities to develop charge-caching cameras October 2010 ATST SWG 5

Partner Guidance • Designs to be presented at PDRs are to be based upon ‘baseline’ cameras • Provide an estimate of the cost delta if the camera pixel size were to be changed October 2010 ATST SWG 6

‘Off the Shelf’ IR • Teledyne HAWAII 2 RG available now – SWIR 0. 5 – 2. 5 micron – MWIR 0. 5 – 5. 3 micron October 2010 ATST SWG 7

Off the Shelf Visible • Best available visible sensor – Fairchild/PCO/Andor s. CMOS available now • • October 2010 2560 X 2160 front side illuminated 100 fps 3 e- read noise ATST SWG 8

‘Off the Shelf’ – Next generation scientific CMOS (< 4 years) • 5 k X 5 k • ‘fast’ October 2010 ATST SWG 9

Requirements met by baseline Instrument Band Sensor Size VBI blue 388 nm – 550 nm 4 k x 4 k (2560 x 2160) 30 fps >0. 7 ( ~0. 5) VBI red 656 nm – 854 nm 4 k x 4 k (2560 x 2160) 30 fps >0. 7 ( ~0. 5) Vi. SP 380 nm – 900 nm 1 k x 4 k (2560 x 2160) 100 fps >0. 7 ( ~0. 5) VTF 517 nm – 869 nm 4 k x 4 k (2560 x 2160) 30 fps >0. 7 ( ~0. 5) DL-NIRSP 900 nm – 2500 nm 2 k x 2 k 10 fps yes Cryo-NIRSP 1000 nm – 5000 nm 2 k x 2 k 10 fps yes October 2010 ATST SWG Frame Rate Quantum Eff. 10

Goals • Charge-caching – Integrate into four modulation states cycling through states at multi k. Hz rate and read out slowly (40 Hz) • Excellent QE, >0. 7 especially in NIR October 2010 ATST SWG 11

Proposed Sensors • • CMOS Back illuminated, deep depletion Multiple taps for high speed and low noise Charge-caching pixels October 2010 ATST SWG 12

Charge-caching Vendors • Sarnoff – Has demonstrated unit cell • Teledyne – Has proposed a design October 2010 ATST SWG 13

External Funding? • UK science agency via Sarah Matthews – Diminishing agency funding – What would be cut to fund this effort • AFOSR – Action item pending • Commercial market – Queries of potential customers by Andor indicate this technology is too soon after s. CMOS. • EELT – Insufficient funding available to develop sensors October 2010 ATST SWG 14