Journal article
An autocollimator alignment system for a Schwarzschild-Couder Cherenkov telescope
Experimental astronomy, Vol.42(1), pp.1-10
04/27/2016
DOI: 10.1007/s10686-016-9497-y
Abstract
We present a digital autocollimator which will be used in the alignment system of a prototype medium-sized telescope, which is part of the U.S. contribution to the Cherenkov Telescope Array (CTA). The Schwarzschild-Couder optics in the prototype telescope (which is currently under construction) requires the precise alignment of three components: the primary and secondary segmented mirrors, and the gamma-ray camera. The approximately 9 meter separation between the mirrors necessitates remote optical measurement. Our autocollimator will measure the angle of a segment in one mirror relative to the center of the other mirror with a precision better than 5 arcsec over a range of ±0.126
°
. We present a detailed description of the instrument and describe its performance in the laboratory.
Details
- Title: Subtitle
- An autocollimator alignment system for a Schwarzschild-Couder Cherenkov telescope
- Creators
- S. T Griffiths - University of IowaP Kaaret - University of IowaE Smith - Grinnell College
- Resource Type
- Journal article
- Publication Details
- Experimental astronomy, Vol.42(1), pp.1-10
- Publisher
- Springer Netherlands
- DOI
- 10.1007/s10686-016-9497-y
- ISSN
- 0922-6435
- eISSN
- 1572-9508
- Grant note
- PHY-1229792 / National Science Foundation (http://dx.doi.org/10.13039/100000001)
- Language
- English
- Date published
- 04/27/2016
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199934602771
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