Title
Design of an E-ELT M1 segment measurement machine with nanometer accuracy
Author
Bos, A.
Henselmans, R.
Rosielle, P.C.J.N.
Steinbuch, M.
te Voert, M.J.A.
Contributor
Cunningham, C.R. (editor)
Navarro, R. (editor)
Barto, A.A. (editor)
Publication year
2014
Abstract
The baseline design of the European Extremely Large Telescope features a telescope with a 39-meter-class primary mirror (M1), consisting of 798 hexagonal segments. A measurement machine design is presented based on a non-contact single-point scanning technique, capable of measuring the form error of each segment with nanometer uncertainty, fast, and with low operational costs. The implementation of a tactile precision probe eliminates the need for the CMM in the earlier segment manufacturing process. Preliminary assessment show nanometer-level uncertainty after calibration.
Subject
Mechanics, Materials and Structures
OM - Opto-Mechatronics
TS - Technical Sciences
High Tech Systems & Materials
Electronics
Industrial Innovation
European Extremely Large Telescope (E-ELT)
Giant telescopes
Ground-based astronomy
NANOMEFOS
Non-contact
Segment metrology
Machine design
Optical telescopes
Uncertainty analysis
Measurement machines
To reference this document use:
http://resolver.tudelft.nl/uuid:555713b7-fe13-401b-8492-41848d06d50f
TNO identifier
523228
Publisher
SPIE
ISBN
9780819496195
ISSN
0277-786X
Article number
91510X
Document type
conference paper