Journal Article

Multi-imaging and Bayesian estimation for photon counting with EMCCDs

Eric Lantz, Jean-Luc Blanchet, Luca Furfaro and Fabrice Devaux

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 386, issue 4, pages 2262-2270
Published in print June 2008 | ISSN: 0035-8711
Published online April 2008 | e-ISSN: 1365-2966 | DOI:
Multi-imaging and Bayesian estimation for photon counting with EMCCDs

More Like This

Show all results sharing this subject:

  • Astronomy and Astrophysics


Show Summary Details


A multi-imaging strategy is proposed and experimentally tested to improve the accuracy of photon counting with an electron multiplying CCD (EMCCD), by taking into account the random nature of its on-chip gain and the possibility of multiple photodetection events on one pixel. This strategy is based on Bayesian estimation on each image, with a priori information given by the sum of the images. The method works even for images with large dynamic range, with more improvement in the low light level areas. In these areas, two thirds of the variance added by the EMCCD in a conventional imaging mode are removed, making the physical photon noise predominant in the detected image.

Keywords: instrumentation: detectors; instrumentation: photometers; methods: statistical

Journal Article.  5764 words.  Illustrated.

Subjects: Astronomy and Astrophysics

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.