Ryan Hall, Georgia State University; Stuart Jefferies, Georgia State University
Keywords: high-contrast, high-resolution, speckle imaging, space situational awareness, wavefront sensing, imaging shack-hartmann, multi-aperture phase retrieval
Abstract:
High-resolution imaging can be obtained by using large aperture telescopes. However, doing this from the ground causes you to see more atmosphere, resulting in the images to become distorted and look like little speckles. It is also known that the size and distribution of the speckles is a function of wavelength. We propose a method of analyzing this to attempt to recover color information of the observed object. We try to solve for all the speckles created by each individual wavelength. This allows for a much better estimate of the object across the spectrum, leading to a high-contrast broadband image. For bright targets we believe that we can solve for individual wavelengths enough to get low-resolution spectral information. This could lead to be helpful for materials identification by analyzing continuum features.
Date of Conference: September 15-18, 2020
Track: Adaptive Optics & Imaging