Implementation and testing of a hybrid fast/slow readout mode for the H2RG detectors in SCALES

Peyton Benac; Michael P. Fitzgerald; Eric Wang; Chris Johnson; Ken Magnone; Andy J. Skemer; Phil Hinz; Nicholas MacDonald; Dale Sandford; Deno Stelter; Brittany Miles; Thomas Greene; Steph Sallum; Markus Loose; Richard Blank

doi:10.1117/12.3020401

19 July 2024 Implementation and testing of a hybrid fast/slow readout mode for the H2RG detectors in SCALES

Peyton Benac, Michael P. Fitzgerald, Eric Wang, Chris Johnson, Ken Magnone, Andy J. Skemer, Phil Hinz, Nicholas MacDonald, Dale Sandford, Deno Stelter, Brittany Miles, Thomas Greene, Steph Sallum, Markus Loose, Richard Blank

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 130966Y (2024) https://doi.org/10.1117/12.3020401
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The upcoming SCALES instrument for W.M. Keck Observatory will enable coronagraphic imaging and low-/mid-resolution IFS observations over 2-5 micron wavelengths, using two separate HgCdTe Teledyne Imaging H2RG detectors. These detectors are wired for slow-mode readout at a pixel clock rate of ~100kHz, but when operated with a Teledyne Imaging SIDECAR ASIC followed by an AstroBlank/Markury Scientific MACIE controller card, the system can be operated at faster clock rates up to 30MHz, a mode referred to as hybrid fast-slow readout. We perform room-temperature laboratory tests of detector readout to demonstrate feasibility of hybrid readout using a MUX in place of the H2RG, before proceeding into room-temperature and cold tests with the H2RG detector. We test and optimize full-frame data acquisition with pixel clock rates from 5-30 MHz. We discuss the next steps in detector system testing and verification.

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Peyton Benac, Michael P. Fitzgerald, Eric Wang, Chris Johnson, Ken Magnone, Andy J. Skemer, Phil Hinz, Nicholas MacDonald, Dale Sandford, Deno Stelter, Brittany Miles, Thomas Greene, Steph Sallum, Markus Loose, and Richard Blank "Implementation and testing of a hybrid fast/slow readout mode for the H2RG detectors in SCALES", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130966Y (19 July 2024); https://doi.org/10.1117/12.3020401

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