LSST optical beam simulator

J. A. Tyson, J. Sasian, K. Gilmore, A. Bradshaw, C. Claver, M. Klint, G. Muller, G. Poczulp, E. Resseguie

Research output: Chapter in Book/Report/Conference proceedingConference contribution

19 Scopus citations

Abstract

We describe a camera beam simulator for the LSST which is capable of illuminating a 60mm field at f/1.2 with realistic astronomical scenes, enabling studies of CCD astrometric and photometric performance. The goal is to fully simulate LSST observing, in order to characterize charge transport and other features in the thick fully-depleted CCDs and to probe low level systematics under realistic conditions. The automated system simulates the centrally obscured LSST beam and sky scenes, including the spectral shape of the night sky. The doubly telecentric design uses a nearly unit magnification design consisting of a spherical mirror, three BK7 lenses, and one beam-splitter window. To achieve the relatively large field the beam-splitter window is used twice. The motivation for this LSST beam test facility was driven by the need to fully characterize a new generation of thick fully-depleted CCDs, and assess their suitability for the broad range of science which is planned for LSST. Due to the fast beam illumination and the thick silicon design [each pixel is 10 microns wide and over 100 microns deep] at long wavelengths there can be effects of photon transport and charge transport in the high purity silicon. The focal surface covers a field more than sufficient for a 40×40mm LSST CCD. Delivered optical quality meets design goals, with 50% energy within a 5 micron circle. The tests of CCD performance are briefly described.

Original languageEnglish (US)
Title of host publicationHigh Energy, Optical, and Infrared Detectors for Astronomy VI
PublisherSPIE
ISBN (Print)9780819496225
DOIs
StatePublished - Jan 1 2014
Externally publishedYes
EventHigh Energy, Optical, and Infrared Detectors for Astronomy VI - Montreal, QC, Canada
Duration: Jun 22 2014Jun 25 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9154
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherHigh Energy, Optical, and Infrared Detectors for Astronomy VI
CountryCanada
CityMontreal, QC
Period6/22/146/25/14

Keywords

  • Doubly telecentric
  • LSST CCD
  • Large synoptic survey telescope
  • Reimager
  • Wide-field

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'LSST optical beam simulator'. Together they form a unique fingerprint.

Cite this