Abstract: Systems and methods are described for providing a risk assessment for a software application based on evidence obtained from one or more sources. In some aspects, security and compliance evidence may be obtained from one or more evidence sources, for an application offered through a service provider, where the evidence sources include operational data from the application executing within a runtime environment provided by the service provider. The obtained evidence may be mapped to risk assessment criteria to generate a risk assessment. In some cases, the risk assessment criteria includes a plurality of attributes of the application, with the attributes indicating potential vulnerabilities of the application. A representation of the risk assessment may be generated across at least some of the attributes based on the risk assessment comparison. The risk assessment representation may then be updated based on monitoring of the security and compliance evidence for the application.

Abstract: A star tracker for generating positional information for a vehicle includes a holographic telescope (150) having one or more fields of view for imaging stellar objects. The telescope includes a plurality of radiation detectors (100) and an input aperture comprised of a primary holographic optical element (HOE) (134). The primary HOE provides one or more wavefronts to one or more secondary HOEs (136), each of which applies a chromatic correction so as to correct for a chromatic aberration induced by the primary HOE. A single or multiple field of view Schmidt telescope embodiment is also disclosed having one or more aspheric corrector plate HOEs and one or more associated concave spherical reflectors.