Wavefront sensor for millimeter/submillimeter-wave adaptive optics based on aperture-plane interferometry
We present a concept of a millimeter wavefront sensor that allows real-time sensing of the surface of a groundbased millimeter/submillimeter telescope. It is becoming important for ground-based millimeter/submillimeter astronomy to make telescopes larger with keeping their surface accurate. To establish `millimetric adaptive optics (MAO)' that instantaneously corrects the wavefront degradation induced by deformation of telescope optics, our wavefront sensor based on radio interferometry measures changes in excess path lengths from characteristic positions on the primary mirror surface to the focal plane. This plays a fundamental role in planed 50-m class submillimeter telescopes such as LST and AtLAST.
Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series
- Pub Date:
- December 2020
- Astrophysics - Instrumentation and Methods for Astrophysics
- 9 pages, 5 figures. Published in SPIE Proc