UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

A deformable secondary demonstrator for adaptive optics

Lee, Jun-Ho; (1999) A deformable secondary demonstrator for adaptive optics. Doctoral thesis (Ph.D), UCL (University College London). Green open access

[thumbnail of A_deformable_secondary_demonst.pdf] Text

Download (30MB)


Atmospheric turbulence distorts the wavefront of the incoming light from an astronomical object and so limits the ability of a telescope to form perfect images. Adaptive optics is a combination of technologies that enable the correction of the wavefront distortion in real time. Conventional adaptive optics operate like auxiliary instruments and use additional relay optics which reduce total throughput and introduce extra IR emissivity and polarisation. Adaptive secondary mirrors avoid additional optical surfaces by providing the optical correction at an existing telescope surface (the secondary mirror). Previous studies have demonstrated the optical efficacy and mechanical feasibility of performing the adaptive correction in this way. A demonstrator is being developed to explore features and techniques applicable to a large adaptive secondary mirror and to explore manufacturing, assembly/disassembly, calibration and measurement techniques. This thesis describes the design, simulation, construction, and laboratory evaluation of the demonstrator. The thesis concludes with assessment of the viability of the approach of large adaptive secondaries for 8-m class telescopes.

Type: Thesis (Doctoral)
Qualification: Ph.D
Title: A deformable secondary demonstrator for adaptive optics
Open access status: An open access version is available from UCL Discovery
Language: English
Additional information: Thesis digitised by ProQuest.
Keywords: Pure sciences; Adaptive optics; Telescope
URI: https://discovery.ucl.ac.uk/id/eprint/10097345
Downloads since deposit
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item