• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Ellerbroek
Ellerbroek

... Solve a 35k x 7k wavefront control problem at 800Hz – End-to-end latency of 1000ms (strong goal of 400 ms) ...
Article - Agenda INFN
Article - Agenda INFN

... repeating X-ray at wavelength imaging experiments if the very high performance wanted to be obtained. This operation has to be done in vacuum for soft Xray K-B microscope working at 4.75keV because of the absorption of 4.75keV soft X-ray in air, so the experiments are very complex and expensive. The ...
THE STRUCTURE OF HIGH STREHL RATIO POINT
THE STRUCTURE OF HIGH STREHL RATIO POINT

... apodizing the pupil reduces the effects of the first-order antisymmetric component of the aberrated PSF and allows the symmetric component to become the dominant aberration at lower Strehl ratios, as well as for a larger angular extent than in the case of a completely clear aperture. A knowledge of th ...
Catchers Introduction - Astrophotography for Astrophotographers
Catchers Introduction - Astrophotography for Astrophotographers

... usefulness of his telescope design (the Ritchey-Chretien optical system). For the next five years he eked out a living on his Orange Grove in Azusa, California. The Ritchey-Chretien design forms the basis of the optical system used in the latest generation of ‘super’ telescopes including the Hubble ...
Part 2 : Use of CCD cameras
Part 2 : Use of CCD cameras

... sequences are generated in software and output from the DSP by way of on-chip parallel ports. The most basic CCD design requires a minimum of 7 clock signals. Perhaps 5 more are required to coordinate the operation of the signal processing electronics. DSPs also contain several on-chip serial ports ...
Real-time earthquake warning for astronomical observatories
Real-time earthquake warning for astronomical observatories

... suggest that earthquakes closer than 100 km are required to do the most damage, and we show why this is likely to be the case in section III. The Laser Interferometer Gravitational-wave Observatory (LIGO) [16], Virgo [17], and GEO600 [18] detectors are part of a network of gravitational-wave interf ...
Chapter 32 Optical Images
Chapter 32 Optical Images

... When two plane mirrors are parallel, such as on opposite walls in a barber shop, multiple images arise because each image in one mirror serves as an object for the other mirror. An object is placed between parallel mirrors separated by 30 cm. The object is 10 cm in front of the left mirror and 20 cm ...
pdf
pdf

... Moving between two and three focal lengths from the big lens, the image remains in-focus and inverted, but is smaller than the apparent size of the actual object. This is called tele-compression. ...
Basic Principles of the Surgical Microscope
Basic Principles of the Surgical Microscope

... This formula is easy to recall since it involves each basic component of the microscope head and the division of the objective lens value into the binocular tube value. This is, likewise, easy to remember because that is their natural configuration on the microscope: binocular above, objective lens ...
Null lens - The University of Arizona College of Optical Sciences
Null lens - The University of Arizona College of Optical Sciences

... – Pattern distortion errors • Use multiple holograms on the same substrate. One hologram is used for null lens calibration. The other is used to calibrate the line pattern irregularity ...
slides ppt
slides ppt

... MG 11 - Berlin ...
Subject: Koblenz meeting From: Peter Abrahams
Subject: Koblenz meeting From: Peter Abrahams

... 7x50 housing, with bayonet mounted eyepieces that were replaceable. This was a 'day vision' & 'night vision' model, using image-intensifier eyepieces for night use. They can use a variety of image intensifiers, of varying quality and price. Using generation-2 class image intensifiers (which cost 1,0 ...
Light and Telescopes Astronomy 1 — Elementary Astronomy LA Mission College Spring F2015
Light and Telescopes Astronomy 1 — Elementary Astronomy LA Mission College Spring F2015

... Which of the following wavelength ranges reaches the Earth from astronomical objects only in a few small windows and except for those windows requires a high flying aircraft, balloon or space-based telescope to ...
T1000179-v18_aLIGO_HWS_optical_layouts - DCC
T1000179-v18_aLIGO_HWS_optical_layouts - DCC

... Figure 8: HWSX imaging optics on the exterior table. The beam propagates from the SOURCE and is reflected off a 50/50 beam splitter. From here the probe beam passes through a delay line that is used to adjust the F2 (AIR LENS)-HWS distance and then passes through F2 (AIR LENS) at close to normal inc ...
1 Introduction. - NRAO Library
1 Introduction. - NRAO Library

... target. Telescope structural elements on main reflector and feedarm, located near retroreflector targets, are painted to give diffuse reflection, so returns from misdirected beams are scattering rather than specular. The attenuated return beam from a retroreflecting field target is deflected by the ...
SOFIA Engineering Meeting 12-May-2011
SOFIA Engineering Meeting 12-May-2011

... Anything that can cause injury to personnel Anything that can cause a fire Commands by one system to others that result in hazardous conditions Systems that monitor, monitor provide warning of of, or prevent hazardous conditions Anything that affects the aircraft pressure boundaries Foreign Object D ...
Visible light laser guidestar experimental system (Villages): on
Visible light laser guidestar experimental system (Villages): on

... The AO optical bench was designed to allow maximum flexibility in configuring Villages experiments. A schematic drawing showing beam paths appears in Figure 1. Light from the telescope first reflects off a fast tip/tilt mirror and is then split into two paths, one which is corrected by the DM and on ...
Modern Optical Design
Modern Optical Design

... • Increased light gathering power – With TMT can collect 9x the energy from an object (over Keck) – Spectroscopy of most distant objects known – Planet searches and their study ...
Selection Criteria for LAEs at z=4.8
Selection Criteria for LAEs at z=4.8

Test cryostat and OGSE
Test cryostat and OGSE

... Mechanical I/F to pumping unit ...
Spherical Aberration
Spherical Aberration

... Two waves of spherical aberration through focus. From positive four waves to negative seven waves, at one wave steps of defocus. The first image in the middle row is at the Gaussian image plane. ...
Modeling the Spectral Energy Distributions and Variability
Modeling the Spectral Energy Distributions and Variability

... • Short (sub-second to minutes) flashes of gammarays, for ~ 30 years not associated with any counterparts in other wavelength bands • First dedicated GRB detector: BATSE on the ...
Candidate detector assessment for the CASTOR
Candidate detector assessment for the CASTOR

... is hoping to work with manufacturers to incorporate optimized surface treatments of the detector for improved quantum efficiency in the NUV spectral region, while investigating the trade space surrounding anti-reflection coatings in this region. 1.1 Mission Overview The CASTOR mission is a proposed ...
How the Confocal Laser Scanning Microscope entered Biological
How the Confocal Laser Scanning Microscope entered Biological

... concave mirrors shown in Fig. 4 as a substitute for the 1:1 refractive telescope which was causing our chromatic problems. At first sight, this seems unpromising, at least with simple spherical surfaces, since the mirrors are used off-axis and would be expected to introduce serious astigmatism. Amos ...
Imaging Properties of Laser-Produced Parabolic Profile Microlenses
Imaging Properties of Laser-Produced Parabolic Profile Microlenses

... 2 which have larger numerical aperture and larger wave front aberrations and because of that smaller PSF. The second group consists of microlenses 3, 4, and 5 which have smaller numerical aperture and smaller wave front aberrations and because of that larger PSF. The spot diagram represents method f ...
< 1 2 3 4 5 6 7 8 9 10 ... 99 >

Reflecting telescope



A reflecting telescope (also called a reflector) is an optical telescope which uses a single or combination of curved mirrors that reflect light and form an image. The reflecting telescope was invented in the 17th century as an alternative to the refracting telescope which, at that time, was a design that suffered from severe chromatic aberration. Although reflecting telescopes produce other types of optical aberrations, it is a design that allows for very large diameter objectives. Almost all of the major telescopes used in astronomy research are reflectors. Reflecting telescopes come in many design variations and may employ extra optical elements to improve image quality or place the image in a mechanically advantageous position. Since reflecting telescopes use mirrors, the design is sometimes referred to as a ""catoptric"" telescope.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report