Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Testing and applicability of the UPC-ZEBRA interferometer as a phasing system in segmented-mirror telescopes

Not Accessible

Your library or personal account may give you access

Abstract

In segmented-mirror telescopes, wave-front discontinuities caused by segment misalignment are a major problem because they severely degrade optical performance. While angular misalignments are usually measured with deflectometric wave-front sensors (e.g., Shack-Hartmann sensors), a number of techniques have been proposed for the measurement of vertical discontinuities (pistons). In earlier papers we presented an instrument called UPC-ZEBRA that uses a novel interferometric technique to measure piston error during the daytime with an uncertainty of 5 nm within a 30-μm range. Here we present the most representative results obtained during the testing stage and a detailed analysis of error sources. The main modifications to be introduced for the instrument’s use as a phasing calibration system are also outlined.

© 2004 Optical Society of America

Full Article  |  PDF Article
More Like This
Design of an interferometric system for the measurement of phasing errors in segmented mirrors

Carles Pizarro, Josep Arasa, Ferran Laguarta, Núria Tomàs, and Agustí Pintó
Appl. Opt. 41(22) 4562-4570 (2002)

Phasing segmented mirrors: a modification of the Keck narrow-band technique and its application to extremely large telescopes

Achim Schumacher, Nicholas Devaney, and Luzma Montoya
Appl. Opt. 41(7) 1297-1307 (2002)

Development of a line-scan CCD-based fringe tracker for optical interferometry

Agustí Pintó and Ferran Laguarta
Appl. Opt. 45(26) 6694-6701 (2006)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved