Haffert, Sebastiaan Y. and Keller, Christoph U. and Dekany, Richard (2020) Using the generalised-optical differentiation wavefront sensor for laser guide star wavefront sensing. In: Adaptive Optics Systems VII. Proceedings of SPIE. No.11448. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 114481T. ISBN 9781510636835. https://resolver.caltech.edu/CaltechAUTHORS:20201217-100023057
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Abstract
Laser guide stars (LGS) are used in many adaptive optics systems to extend sky coverage. The most common wavefront sensor used in combination with a LGS is a Shack-Hartmann wavefront sensor (SHWFS). The ShackHartmann has a major disadvantage for extended source wavefront sensing because it directly samples the image. In this proceeding we propose to use the generalized-Optical Differentation Wavefront Sensor (g-ODWFS) a wavefront sensor for wavefront sensing of LGS. The g-ODWFS uses only 4 pixels per sub-aperture, has little to no aliasing noise and therefore no spurious low-order errors and has no need for centroid gain calibrations. In this proceeding we show the results of simulations that compare the g-ODWFS with the SHWFS.
| Item Type: | Book Section | ||||||
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| Additional Information: | © 2020 Society of Photo-Optical Instrumentation Engineers (SPIE). Support for this work was provided by NASA through the NASA Hubble Fellowship grant #HST-HF2-51436.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555. | ||||||
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| Subject Keywords: | Manuscript format, template, SPIE Proceedings, LaTeX | ||||||
| Series Name: | Proceedings of SPIE | ||||||
| Issue or Number: | 11448 | ||||||
| DOI: | 10.1117/12.2562610 | ||||||
| Record Number: | CaltechAUTHORS:20201217-100023057 | ||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20201217-100023057 | ||||||
| Official Citation: | Sebastiaan Y. Haffert, Christoph U. Keller, and Richard Dekany "Using the generalised-optical differentiation wavefront sensor for laser guide star wavefront sensing", Proc. SPIE 11448, Adaptive Optics Systems VII, 114481T (13 December 2020); https://doi.org/10.1117/12.2562610 | ||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 107147 | ||||||
| Collection: | CaltechAUTHORS | ||||||
| Deposited By: | Tony Diaz | ||||||
| Deposited On: | 17 Dec 2020 19:40 | ||||||
| Last Modified: | 16 Nov 2021 19:00 |
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