Optics technology for large-aperture space telescopes: from fabrication to final acceptance tests

Abstract

This review paper addresses topics of fabrication, testing, alignment, and as-built performance of reflective space optics for the next generation of telescopes across the x-ray to far-infrared spectrum. The technology presented in the manuscript represents the most promising methods to enable a next level of astronomical observation capabilities for space-based telescopes as motivated by the science community. While the technology to produce the proposed telescopes does not exist in its final form, the optics industry is making steady and impressive progress toward these goals across all disciplines. We hope that through sharing these developments in context of the science objectives, further connections and improvements are enabled to push the envelope of the technology.

Measurement of Freeform Optical Surfaces: Trade‐Off between Accuracy and Dynamic Range

“…Measuring in‐process surface figure error with large local slopes has become a bottleneck preventing entry to the subsequent polishing process. [ 112 ] The underlying sticking point lies in the lack of flexibility of conventional null optics. Recently adaptive null interferometry has been developed to troubleshoot this issue by introducing adaptive null optics such as deformable mirror (DM) and SLM.…”

High-dynamic range segmented mirror metrology by two-wavelength PISTIL interferometry: demonstration and performance

“…Today, there exists a large panel of projects relying on segmented wavefronts tailoring, either in coherent combination of elementary fiber lasers [1][2][3], astronomy [4], or ophthalmology [5].…”

Structure Design and Image Reconstruction of Hexagonal-Array Photonics Integrated Interference Imaging System

“…The resolution of a telescope is determined by the diffraction limit. With increasing demand for higher resolving capability, the apertures of the primary mirrors of astronomical telescopes are approaching tens of meters [1]. While the longitudinal length of the optical system is even greater than the mirror's aperture.…”

“…While the longitudinal length of the optical system is even greater than the mirror's aperture. For instance, the diameter of the Hubble Space Telescope's primary mirror is 2.4 m but its longitudinal length is 13.25 m [1]. A new type of telescope SPIDER (Segmented Planar Imaging Detector for Electro-optical Reconnaissance) is developed based on the interference imaging.…”