The wavefront sensor in active and adaptive telescopes is usually not in the optical path toward the scientific detector. It may generate additional wavefront aberrations, which have to be separated from the errors due to the telescope optics. The aberrations that are not rotationally symmetric can be disentangled from the telescope aberrations by a series of measurements taken in the center of the field, with the wavefront sensor at different orientation angles with respect to the focal plane. This method has been applied at the VLT Survey Telescope on the ESO Paranal observatory. 2012 Optical Society of America.
Removing static aberrations from the active optics system of a wide-field telescope / Schipani P.; Noethe L.; Arcidiacono C.; Argomedo J.; Dall'ora M.; D'Orsi S.; Farinato J.; Magrin D.; Marty L.; Ragazzoni R.; Umbriaco G.. - In: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION. - ISSN 1084-7529. - ELETTRONICO. - 29:7(2012), pp. 1359-1366. [10.1364/JOSAA.29.001359]
Removing static aberrations from the active optics system of a wide-field telescope
Umbriaco G.
2012
Abstract
The wavefront sensor in active and adaptive telescopes is usually not in the optical path toward the scientific detector. It may generate additional wavefront aberrations, which have to be separated from the errors due to the telescope optics. The aberrations that are not rotationally symmetric can be disentangled from the telescope aberrations by a series of measurements taken in the center of the field, with the wavefront sensor at different orientation angles with respect to the focal plane. This method has been applied at the VLT Survey Telescope on the ESO Paranal observatory. 2012 Optical Society of America.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
