Accession Number:

ADA614268

Title:

Low Light Adaptive Correction in Support of the Space Situational Awareness Mission (DCT-FY08)

Descriptive Note:

Final rept. 1 Mar 2003-30 Nov 2010

Corporate Author:

HAWAII UNIV HONOLULU

Personal Author(s):

Report Date:

2014-12-09

Pagination or Media Count:

7.0

Abstract:

Numerous wavefront sensing approaches are used in current adaptive optics systems. Each of these has features that make each attractive under certain situations. Roddier curvature RC adaptive optics systems use a sensor that measures the second derivative of the wavefront phase. Its use is common in astronomical adaptive optics systems and it has two key advantages 1 a minimum number of sensors is required per wavefront sensor subaperture allowing the use of photon-counting devices and operations in very low-light level and 2 an optical gain within the wavefront sensor that allows the wavefront sensor to be tuned to existing turbulence conditions. A key question for RC adaptive optics systems is whether they remain compelling in the low-light level regime as the number of subapertures increases. This was the main avenue of study for this program.

Subject Categories:

  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE