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A fast wide-field telescope: Mechanical design
Bulletin of the Crimean Astrophysical Observatory, 2014A mechanical design of a fast wide-field telescope with an entrance pupil that is 180 mm diameter, a focal length of 294 mm, and an angular field of view of 10° is described. Original construction solutions have been found for this type of system.
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All-spherical catadioptric telescope design for wide-field imaging
Applied Optics, 2010The current trend in building medium-size telescopes for wide-field imaging is to use a Ritchey-Chrétien (RC) design with a multilens corrector near the focus. Our goal is to find a cost-effective alternative design to the RC system for seeing-limited observations. We present an f/4.5 all-spherical catadioptric system with a 1.5° field of view.
Mehdi, Bahrami, Alexander V, Goncharov
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The Discovery Channel Telescope: a wide-field telescope in Northern Arizona
SPIE Proceedings, 2004Lowell Observatory has initiated the development of a four meter class optical telescope with significant capabilities for solar system and broad spectrum astronomical research. Key to the Discovery Channel Telescope (DCT) is the ability to rapidly switch between 2 degree FOV imaging via a prime focus camera to 30 arc min FOV instrumentation at ...
Thomas A. Sebring +2 more
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Wide Field Infrared Survey Telescope [WFIRST]: telescope design and simulated performance
SPIE Proceedings, 2012The Wide Field Infrared Survey Telescope (WFIRST) mission concept was ranked first in new space astrophysics missions by the Astro2010 Decadal Survey, incorporating the Joint Dark Energy Mission payload concept and multiple science white papers. This mission is based on a space telescope at L2 studying exoplanets [via gravitational microlensing ...
R. Goullioud +10 more
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Image motion analyses of a wide field telescope
Journal of the Korean Physical Society, 2012An image motion analysis is essential for estimating the optical and the opto-mechanical performances of a wide field telescope optical system under a severe windy environment. A wide field telescope is a Richey-Chretien telescope that covers a 2° field of view with two hyperbolic mirrors, a 0.5 m primary mirror and a 0.2 m secondary mirror, and ...
Sangon Lee +5 more
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A novel wide-field hard x-ray telescope
Experimental Astronomy, 1995We discuss a hard x-ray telescope for the range 25–70 keV based on a one-dimensional lobster-eye telescope and x-ray supermirror coatings. This approach enables wide field-of-view imaging. A telescope suitable for a large balloon payload, with a 50×100 cm frontal area, could have an effective area of 50–100 cm2 and a 100×100 field of view, and thereby ...
W. C. Priedhorsky, F. E. Christensen
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The Wide Field X-ray Telescope
2011Proceedings of the "Wide Field X-ray Telescope" conference held in Bologna, Italy on 25-26 Nov 2009. The conference highlighted the scientific potential and discovery space provided by an X-ray mission concept characterized by a wide field-of-view (1 sq.deg.), large effective area (1 sq.mt.) and approximately constant PSF (~5 arcsec HEW) across the ...
Rosati P. +4 more
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Wide field x-ray surveys: wide field x-ray telescope (WFXT) and notional wide field imager (N-WFI)
SPIE Proceedings, 2012ABSTRACT Wide eld X-ray surveys require large eld of view telescopes operating in a step and repeat orslow scanning mode in order to cover large areas of the sky eciently. Here we discuss two similar,yet dierent designs for a wide eld survey mission that can each be accomplished for a cost ofless than $1B (FY 2012) and that cover many hundreds to ...
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Multi-Fiber Spectroscopy with Wide-Field Telescopes
1995Fiber-fed multi-object systems are now the preferred instruments for gathering spectroscopic data on survey scales. The technique lends itself particularly well to telescopes with fields of 30 arcminutes or more. This paper gives a broad overview of the instrumental considerations involved in its implementation.
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Near-perfect Collimation of Wide-Field Cassegrain Telescopes
Publications of the Astronomical Society of the Pacific, 2012I describe a simple new method for collimating a Cassegrain telescope that gives near-perfect correction over a wide field of view. This method was used to collimate the 6.5 m MMT in 2002 with remarkably good results. The first step is to point the primary mirror accurately at an object.
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