Abstract
We discuss the advantages and limitations of Electron Multiplying CCD technology in high precision photometry on short timescales, with special emphasis on probing the smallest structures in active galactic jets. Factors external to the EMCCD, rather than the architecture of the EMCCD itself, most often limit the precision of photometry that can be reached with groundbased observations. Although EMCCDs can be used in photon-counting mode, reliable photometry can still only be achieved when careful observing procedures are employed. Observations of a small sample of blazars taken with an EMCCD are briefly discussed. An innovative two-colour photometer, based on simultaneous observations with two EMCCDs is described and the science drivers are discussed. Novel opportunities for the use of EMCCDs in lucky photometry are outlined and it is clear that certain scientific questions cannot be addressed with groundbased observations taken with conventional CCDs.
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Smith, N. et al. (2008). EMCCD Technology in High Precision Photometry on Short Timescales. In: Phelan, D., Ryan, O., Shearer, A. (eds) High Time Resolution Astrophysics. Astrophysics and Space Science Library, vol 351. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-6518-7_13
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DOI: https://doi.org/10.1007/978-1-4020-6518-7_13
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