Ground- and space-based UV observations with EMCCDs  (Conference Presentation)

Gillian Kyne; Erika T. Hamden; Keri Hoadley; Christopher Martin; Shouleh Nikzad; April Jewell

doi:10.1117/12.2530520

9 September 2019 Ground- and space-based UV observations with EMCCDs (Conference Presentation)

Gillian Kyne, Erika T. Hamden, Keri Hoadley, Christopher Martin, Shouleh Nikzad, April Jewell

Proceedings Volume 11115, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts IX; 111150B (2019) https://doi.org/10.1117/12.2530520
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

I will present on-going detector developments in our joint NASA/CNES balloon-borne UV multi-object spectrograph, FIREBall-2, the Faint Intergalactic Redshifted Emission Balloon. FIREBall-2 is a path finding mission to test new technology (EMCCDs) and make new constraints on the temperature and density of this gas. This instrument has been designed to detect faint emission from the circumgalactic medium (CGM) around low redshift galaxies (z ~ 0.7). One major change from FIREBall-1 has been the use of a delta-doped Electron Multiplying CCD (EMCCD). EMCCDs can be used in photon-counting (PC) mode to achieve extremely low readout noise (< 1 electron). Our testing initially focused on reducing clock-induced-charge (CIC) through wave shaping and well depth optimisation with a NuVu CCD Controller for Counting Photons (CCCP). This optimisation also includes methods for reducing dark current, via cooling, and exploring substrate voltage levels. I will present some of our dark current results from laboratory testing. We recently launched FIREBall-2 from Fort Sumner, New Mexico on September 22nd, 2018. This was the first time an EMCCD has been used for UV/optical observations in flight! I will present performance data from the flight including cosmic ray rate measurements, and some of our preliminary on-sky UV results using our data reduction.

Conference Presentation

Citation Download Citation

Gillian Kyne, Erika T. Hamden, Keri Hoadley, Christopher Martin, Shouleh Nikzad, and April Jewell "Ground- and space-based UV observations with EMCCDs (Conference Presentation)", Proc. SPIE 11115, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts IX, 111150B (9 September 2019); https://doi.org/10.1117/12.2530520

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KEYWORDS

Electron multiplying charge coupled devices

Ultraviolet radiation

Charge-coupled devices

Astronomical imaging

Detector development

Galactic astronomy

New and emerging technologies

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