TY - JOUR
AU - Putnam, Nicole
AB - A new requirement for astronomical adaptive optics is the simultaneous measurement of wavefronts of multiple natural or laser guide stars. We have devised a new implementation of the Shack-Hartmann method to image multiple spot patterns on a single imaging array. An image of the telescope pupil is formed on a multifaceted prism with rings of subapertures. All beacons in the field are then imaged by a camera lens to form the same spot pattern repeated over the detector format. The facets are fly-cut in polycarbonate, tangent to a convex surface. In order to minimize scattering and aid manufacturing, the prism angles are exaggerated, and an index-matching fluid is used to reduce the refracted angles by a factor of 15. Results from lab and telescope tests are presented.
TI - Manufacture and use of a Shack-Hartmann sensor with a multifaceted prism for simultaneous sensing of multiple wavefronts
JF - Proceedings of SPIE
DO - 10.1117/12.579781
DA - 2004-10-25
UR - https://www.deepdyve.com/lp/spie/manufacture-and-use-of-a-shack-hartmann-sensor-with-a-multifaceted-8V7eCMM8LV
SP - 1138
EP - 1145
VL - 5490
IS - 1
DP - DeepDyve
ER -