27 July 2016 Status report on STA detectors and electronics for 2016
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Abstract
We report on ongoing scientific CCD detector and control electronic developments at STA. Recent astrometric and spectroscopic instruments are pushing for highly uniform pixel arrays. We present results from sensors fabricated with high resolution 1X masks aimed at minimizing the random and periodic pixel nonuniformities introduced during manufacture. Instrument requirements for large next generation telescopes tend to target larger arrays with larger pixels. We introduce the STA4500, a four output 6120 x 6120 15um CCD intended for these applications. The device includes dual transfer gates before the serial register to allow slow, high CTE vertical transfers to occur simultaneous with serial readout. We also present our next experimental high dynamic range CCD. This sensor uses dual outputs operating in parallel with different sensitivities to greatly expand the linear dynamic range achievable with large pixel scientific sensors without impairing noise or readout rate. Finally, we describe updates to our Archon astronomical CCD controller. Improvements include daisy chained multi-controller synchronization for mosaic readout, high resolution thermal control for sub-milliKelvin temperature stability, and high voltage biases up to +/-100V for operating deep depletion CCDs.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gregory Bredthauer, Kasey Boggs, "Status report on STA detectors and electronics for 2016", Proc. SPIE 9915, High Energy, Optical, and Infrared Detectors for Astronomy VII, 99150S (27 July 2016); doi: 10.1117/12.2231802; https://doi.org/10.1117/12.2231802
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