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| Paper: |
Application of Superresolution in Diffraction-Limited Systems |
| Volume: |
25, Astronomical Data Analysis Software and Systems I |
| Page: |
205 |
| Authors: |
Bippert-Plymate, Teresa A.; Paul, Andrew E.; Rieke, George H. |
| Abstract: |
Two geometric parameters can be controlled in gathering data for superresolution (SR) processing. First, the pixel scale relative to the image can be adjusted either by a physical adjustment of the size of the pixels or by modifying the focal length of the optical system that feeds the pixels. Second, the telescope can be moved to place the image at differing positions on the detector array. We have investigated the optimization of these parameters for SR with a diffraction-limited system. Simulations allow us to explore the influence of projected pixel size, overlapping exposures, noise, and telescope tracking errors on the fidelity of the resolution-boosted image. We find that overlapping exposures on centers of half the pixel width can significantly improve the restorations. The optimum pixel size is signal-to-noise dependent. Pixels of about lambda /2D (where lambda is the wavelength and D is the telescope aperture) used with overlapping exposures are well-suited for observations at signal-to-noise ratios of 100:1. |
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