An autocollimator alignment system for a Schwarzschild-Couder Cherenkov telescope
| Autor: | S. T. Griffiths, E. Smith, Philip Kaaret |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
business.industry Astrophysics::High Energy Astrophysical Phenomena Astrophysics::Instrumentation and Methods for Astrophysics Measure (physics) Astronomy and Astrophysics Autocollimator Cherenkov Telescope Array 01 natural sciences law.invention 010309 optics Telescope Optics Space and Planetary Science law 0103 physical sciences business Optical metrology 010303 astronomy & astrophysics Schwarzschild radius Cherenkov radiation |
| Zdroj: | Experimental Astronomy. 42:1-10 |
| ISSN: | 1572-9508 0922-6435 |
| DOI: | 10.1007/s10686-016-9497-y |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|