Bayesian photon counting with electron-multiplying charge coupled devices (EMCCDs)

Details Bayesian photon counting with electron-multiplying charge coupled devices (EMCCDs) Bayesian photon counting with electron-multiplying charge coupled devices (EMCCDs)

2011-11-08

arxiv.org/abs/1111.2066v1

Astronomy & Astrophysics, 2012, Volume 537, id.A50

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

To appear in Astronomy and Astrophysics, Instrumentation Section

Scientific paper

10.1051/0004-6361/201117089

The EMCCD is a CCD type that delivers fast readout and negligible detector noise, making it an ideal detector for high frame rate applications. Because of the very low detector noise, this detector can potentially count single photons. Considering that an EMCCD has a limited dynamical range and negligible detector noise, one would typically apply an EMCCD in such a way that multiple images of the same object are available, for instance, in so called lucky imaging. The problem of counting photons can then conveniently be viewed as statistical inference of flux or photon rates, based on a stack of images. A simple probabilistic model for the output of an EMCCD is developed. Based on this model and the prior knowledge that photons are Poisson distributed, we derive two methods for estimating the most probable flux per pixel, one based on thresholding, and another based on full Bayesian inference. We find that it is indeed possible to derive such expressions, and tests of these methods show that estimating fluxes with only shot noise is possible, up to fluxes of about one photon per pixel per readout.

Affiliated with

Also associated with

No associations

Rating

Bayesian photon counting with electron-multiplying charge coupled devices (EMCCDs) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Bayesian photon counting with electron-multiplying charge coupled devices (EMCCDs), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bayesian photon counting with electron-multiplying charge coupled devices (EMCCDs) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-41356