Alignment telescope for Antares

Conference · Sat Jan 01 04:00:00 EST 1983

OSTI ID:6028593

Appert, Q D; Swann, T A; Ward, J H; Hardesty, C; Wright, L

The Antares Automatic Alignment System employs a specially designed telescope for alignment of its laser beamlines. There are two telescopes in the system, and since each telescope is a primary alignment reference, stringent boresight accuracy and stability over the focus range were required. Optical and mechanical designs, which meet this requirement as well as that of image quality over a wide wavelength band, are described. Special test techniques for initial assembly and alignment of the telescope are also presented. The telescope, which has a 180-mm aperture FK51-KZF2 type glass doublet objective, requires a boresight accuracy of 2.8 ..mu..rad at two focal lengths, and object distances between 11 meters and infinity. Travel of a smaller secondary doublet provides focus from 11 m to infinity with approximately 7.8 m effective focal length. By flipping in a third doublet, the effective focal length is reduced to 2.5 m. Telescope alignment was accomplished by using a rotary air bearing to establish an axis in front of the system and placing the focus of a Laser Unequal Path Interferometer (LUPI) at the image plane.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6028593
• Report Number(s): LA-UR-83-1667; CONF-830425-26; ON: DE83014179
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700208* -- Fusion Power Plant Technology-- Inertial Confinement Technology
ALIGNMENT
ANTARES FACILITY
CARBON DIOXIDE LASERS
GAS LASERS
INTERFEROMETERS
LASERS
MEASURING INSTRUMENTS
OPTICAL SYSTEMS
TELESCOPES