The last twenty years has seen a significant increase in the development of high-contrast imaging systems to enable the direct imaging of exoplanets around nearby stars. This remains a technically challenging feat due to a coronagraph’s sensitivity to both low and high spatial frequency aberrations, often requiring sta...
K. Milani, Patrick J. Ingraham, T. Ranka et al.· Optical Modeling and Perform...· 0 citations
This work considers a Machine Learning model trained originally on simulated data, and then augmented with real focus diversity data from the Tiny Observatory for Telescope Optimization (TOTO) testbed at the University of Arizona, and compares the wavefront sensing performance of the Machine Learning model with known t...
Sanchit Sabhlok, Solvay A. Blomquist, M. Kautz et al.· Astronomical Telescopes + In...· 1 citation
Optical alignment of an astronomical three-mirror anastigmat (TMA) telescope is a challenging endeavor where misalignments may degrade image quality beyond what is possible to correct using simple wavefront measurement techniques. Traditionally, the primary and secondary mirrors of large-scale telescopes are aligned wi...
Solvay A. Blomquist, Heejoo Choi, Hyukmo Kang et al.· Journal of Astronomical Tele...· 0 citations
Phase retrieval techniques are utilized to correct low order wavefront aberrations originating from misalignments of the optical system in space based telescope concepts. Traditional phase retrieval involves observation of the Point Spread Function (PSF) and a diversity measurement, usually focus diversity although oth...
Sanchit Sabhlok, Solvay A. Blomquist, Y. Maggie et al.· 0 citations
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