Douglas Hope, (Hart Scientific Consulting International LLC, Tucson, AZ)
Keywords: Imaging, Adaptive Optics, Astronomy
Abstract:
Myopic deconvolution from wave front sensing (MDWFS) is a powerful tool for high-resolution imaging. It is typically used with monochromatic, short exposure images (integration times less than the coherence time for the atmosphere), and Shack-Hartmann wave-front sensor data where the number of sub-apertures across the pupil is commensurate with the turbulence strength D/r0 (where D is the diameter of the telescope and r0 is the spatial coherence length of the atmosphere). However, there are important imaging scenarios that do not fit this model. Imaging faint targets usually requires integration times greater than the atmospheric coherence time and large spectral bandwidths. Observing targets during poor seeing conditions (e.g., daylight observations) result in D/r0 values that are significantly greater than the number of sub-apertures across the pupil.
Date of Conference: September 10-13, 2013
Track: Adaptive Optics