OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 31 — Nov. 1, 2010
  • pp: G167–G173

Low-light-level charge-coupled devices for pyramid wavefront sensing on 8 m class telescopes: what actual gain?

Marcel Carbillet and Armando Riccardi  »View Author Affiliations


Applied Optics, Vol. 49, Issue 31, pp. G167-G173 (2010)
http://dx.doi.org/10.1364/AO.49.00G167


View Full Text Article

Enhanced HTML    Acrobat PDF (426 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We present the results of a comparison made between standard charge-coupled devices (CCDs) and low-light-level (LLL) CCDs in the framework of pyramid wavefront sensing for astronomical adaptive optics (AO) systems on 8 m class telescopes. This comparison is based on detailed end-to-end numerical simulations of the first-light AO system of the Large Binocular Telescope, a relevant example of a pyramid-based AO system. While the model used for simulating the standard CCD is the usual well-established one, mainly based on the consideration of Poisson photon noise and Gaussian readout noise (RON), the model used for the LLLCCD is not only made through the simplistic consideration of a subelectron equivalent RON, but also through the establishment of a gamma distribution. Moreover, an additional dark current component, also resulting from the peculiar architecture of LLLCCDs, is considered. The results obtained clearly show a gain of roughly 0.8 magnitude when considering K-band Strehl ratios ranging from 15% to 60%, at least in the particular case study chosen (Fried parameter characterizing the turbulent atmosphere above the telescope r 0 = 15 cm and low light levels).

© 2010 Optical Society of America

OCIS Codes
(120.4820) Instrumentation, measurement, and metrology : Optical systems
(350.1260) Other areas of optics : Astronomical optics

ToC Category:
Wavefront Sensor Hardware

History
Original Manuscript: April 2, 2010
Revised Manuscript: September 25, 2010
Manuscript Accepted: October 7, 2010
Published: October 21, 2010

Citation
Marcel Carbillet and Armando Riccardi, "Low-light-level charge-coupled devices for pyramid wavefront sensing on 8 m class telescopes: what actual gain?," Appl. Opt. 49, G167-G173 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-31-G167

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited