WIYN tip-tilt module performance

被引：7

作者：

Claver, CF ^{[1
]}

Corson, C ^{[1
]}

Gomez, R ^{[1
]}

Daly, P ^{[1
]}

Dryden, D ^{[1
]}

Abareshi, B ^{[1
]}

机构：

[1] Natl Opt Astron Observ, Tucson, AZ 85726 USA

来源：

LARGE GROUND-BASED TELESCOPES, PTS 1 AND 2 | 2003年 / 4837卷

关键词：

D O I：

10.1117/12.458676

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The WIYN Tip-Tilt Module (WTTM) is an addition to the existing Instrument Adapter System (IAS) providing a high performance optical-NIR image stabilized port on the WIYN 3.5m telescope. The WTTM optical system uses a 3-mirror off-axis design along with a high bandwidth tilt mirror. The WTTM is a reimaging system with 15% magnification producing a 4x4 arcminute field of view and near diffraction limited imagery from 400-2000nm. The optics are diamond turned in electroless Nickel over an Aluminum substrate. The WTTM onto-mechanical assembly was designed and built using the principals of the "build-to-print" technique, where the entire system is fabricated and assembled to tolerance with no adjustments. A unique high performance error sensor, using an internal mirrorlette array that feeds 4 fiber coupled avalanche photodiode photon counters, provides the tilt signal. The system runs under the Real-Time Linux operating system providing a maximum closed loop rate of 3khz. In this paper we report on the successful lab testing, verification of the "build-to-print" technique and on telescope performance of the WTTM.

引用

页码：438 / 447

页数：10

共 4 条

[1]

CLAVER CF, 1997, SPIE P, V3353, P1130

[2] Real time Linux and LabVIEW as a control environment for the WIYN tip-tilt module [J].

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[3] The orthogonal transfer CCD [J].

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[4] A four-quadrant error sensor which yields position and focus utilizing an internal mirrorlette array [J].

Vaughnn, D ;

Claver, CF ;

Richardson, EH .

OPTICAL AND IR TELESCOPE INSTRUMENTATION AND DETECTORS, PTS 1 AND 2, 2000, 4008 :1413-1422

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