Testing Flat Surface Optical Components 1. Mirrors 1.1 Fizeau
... of the flat under test. On the other hand, the auxiliary mirror used in the RitcheyCommon test has a spherical shape, which is the easiest to make and test. An additional advantage is that the spherical mirror needs to be only as large as the minor diameter, if it is elliptical, like many diagonal m ...
... of the flat under test. On the other hand, the auxiliary mirror used in the RitcheyCommon test has a spherical shape, which is the easiest to make and test. An additional advantage is that the spherical mirror needs to be only as large as the minor diameter, if it is elliptical, like many diagonal m ...
Tight L iso -E p -Γ 0 Relation of Long Gamma
... The Liso-Ep,z-Γ0 may be a promising GRB cosmology ruler, but issues are still there. Our new observational project is going on for pushing the cosmology use of this relation . ...
... The Liso-Ep,z-Γ0 may be a promising GRB cosmology ruler, but issues are still there. Our new observational project is going on for pushing the cosmology use of this relation . ...
DESIGN AND CONSTRUCTION OF AN INTERFEROMETER SYSTEM FOR THE STUDY OF
... Thin films are produced when a material is deposited onto a substrate, with the film ranging in thickness from less than a nanometer up to a few micrometers. Thin films are utilized in a countless number of different ways. They are used in optical devices such as mirrors, anti-reflective coatings, o ...
... Thin films are produced when a material is deposited onto a substrate, with the film ranging in thickness from less than a nanometer up to a few micrometers. Thin films are utilized in a countless number of different ways. They are used in optical devices such as mirrors, anti-reflective coatings, o ...
Thin-Film Piezoelectric Unimorph Actuator-Based Deformable Mirror With a Transferred Silicon Membrane
... requirements, not only on the wavefront quality but also on the speed at which the wavefront is corrected [5], [6]. For many of these applications, the availability of high-performance DMs will play a critical enabling role. Space-based planet finders like over TPF require residual wavefront errors ...
... requirements, not only on the wavefront quality but also on the speed at which the wavefront is corrected [5], [6]. For many of these applications, the availability of high-performance DMs will play a critical enabling role. Space-based planet finders like over TPF require residual wavefront errors ...
Spike: AI Scheduling for Hubble Space Telescope After 18 Months
... expended.At that point observationsare removedto elimi- ’ task onto the schedule,thendisplaywhatconstraintsare vionate remainingconstraint violations, until a feasible sched- lated andby whichother tasks. Theconflicting tasks can be ule remains. There are several important measures of unassignedif d ...
... expended.At that point observationsare removedto elimi- ’ task onto the schedule,thendisplaywhatconstraintsare vionate remainingconstraint violations, until a feasible sched- lated andby whichother tasks. Theconflicting tasks can be ule remains. There are several important measures of unassignedif d ...
MAGIQ Overview
... •This observing mode is mostly for high contrast observation • K mirror keeps pupil fixed •The uplink mechanism is conceptualized so that it can be either used to keep the LGSs fixed WRT to the sky or keep them fixed with respect the WFS. •In this case the LGS’s rotate WRT to sky, this doesn’t affec ...
... •This observing mode is mostly for high contrast observation • K mirror keeps pupil fixed •The uplink mechanism is conceptualized so that it can be either used to keep the LGSs fixed WRT to the sky or keep them fixed with respect the WFS. •In this case the LGS’s rotate WRT to sky, this doesn’t affec ...
technical paper
... In addition to improving performance and adding color, reflective coatings are also used to reduce the cost of a wide variety of materials. By applying reflective and color coatings, less expensive base materials can be used and lifetimes extended. Instead of using colored glass, architectural coati ...
... In addition to improving performance and adding color, reflective coatings are also used to reduce the cost of a wide variety of materials. By applying reflective and color coatings, less expensive base materials can be used and lifetimes extended. Instead of using colored glass, architectural coati ...
Untitled - Cambridge University Library
... near the opening of the tube, where the enlarged image could be viewed by an observer. Like his other optical discoveries, Newton’s telescope generated controversy. It was clear that it could achieve a remarkable level of magnification compared with refracting telescopes of a similar size. Despite th ...
... near the opening of the tube, where the enlarged image could be viewed by an observer. Like his other optical discoveries, Newton’s telescope generated controversy. It was clear that it could achieve a remarkable level of magnification compared with refracting telescopes of a similar size. Despite th ...
5. ZoDIACS instrument error budget
... in the detector plane. The camera must image the Fabry-Perot rings as well as possible to get good wavelength resolution. At the edge of the field on the CCD there are about 2.7pixels per FP ring width (at full-width half maximum) which is just enough to give good spatial sampling of the ring image. ...
... in the detector plane. The camera must image the Fabry-Perot rings as well as possible to get good wavelength resolution. At the edge of the field on the CCD there are about 2.7pixels per FP ring width (at full-width half maximum) which is just enough to give good spatial sampling of the ring image. ...
Origami Sunshield Concepts for Space Telescopes Lee Wilson and Sergio Pellegrino Rolf Danner
... The variables n and δ also control the surface area of the sunshield and the corresponding fold length. The area is important because it is proportional to the overall mass, while the total fold length is important because thermal shorts may occur at the folds. Increasing the fold length would thus ...
... The variables n and δ also control the surface area of the sunshield and the corresponding fold length. The area is important because it is proportional to the overall mass, while the total fold length is important because thermal shorts may occur at the folds. Increasing the fold length would thus ...
Inverse Problems in Astronomical Adaptive Optics
... At the end of the tutorial, we address the following important question: Why apply AO when one might simply form an image with a conventional telescope and then enhance the image using deconvolution? We will then discuss in greater detail a few of the current research topics that we believe to be im ...
... At the end of the tutorial, we address the following important question: Why apply AO when one might simply form an image with a conventional telescope and then enhance the image using deconvolution? We will then discuss in greater detail a few of the current research topics that we believe to be im ...
Homework #2, AST 1002, Fall 2015
... (a) When light rays go into an optically less dense medium, they bend away from the normal line. (b) X-rays have shorter wavelengths than light waves. (c) A prism can be used as a mirror. The correct answer(s) is(are) ____________. ...
... (a) When light rays go into an optically less dense medium, they bend away from the normal line. (b) X-rays have shorter wavelengths than light waves. (c) A prism can be used as a mirror. The correct answer(s) is(are) ____________. ...
Swanson User Manual - Von Braun Astronomical Society
... • Do No Harm. Antique optics can only be fixed by replacing the whole scope. Avoid using sprays, and smoking. Both will damage optics. Do not attempt to clean the optics. The only person authorized to clean the optics is the observatory director. • Leave The Gorillas At Home. -- Although the telesco ...
... • Do No Harm. Antique optics can only be fixed by replacing the whole scope. Avoid using sprays, and smoking. Both will damage optics. Do not attempt to clean the optics. The only person authorized to clean the optics is the observatory director. • Leave The Gorillas At Home. -- Although the telesco ...
Slide 1
... All wavefront control functions with 6 surfaces Multi-conjugate AO (2 mirrors 2- and 4-m, conjugated to 0, 8 km) ...
... All wavefront control functions with 6 surfaces Multi-conjugate AO (2 mirrors 2- and 4-m, conjugated to 0, 8 km) ...
Basic Wavefront Aberration Theory for Optical Metrology
... FIG. 33. Focal surfaces in presence of field curvature and astigmatism. ...
... FIG. 33. Focal surfaces in presence of field curvature and astigmatism. ...
HEINE T Master Catalogue
... Light-sources. Most of the instruments are fitted with a miniature XHL Xenon Halogen bulb with a much brighter light and longer working life than those of conventional miniature bulbs. Each bulb is specially-designed to suit the instrument to which it is fitted. Power Sources. With a battery or rech ...
... Light-sources. Most of the instruments are fitted with a miniature XHL Xenon Halogen bulb with a much brighter light and longer working life than those of conventional miniature bulbs. Each bulb is specially-designed to suit the instrument to which it is fitted. Power Sources. With a battery or rech ...
0104 MWO-Goniometer-Eng-RZ
... precision Goniometers and Goniometer-Spectrometers for industrial and scientific applications. Goniometers are indispensable instruments for measuring and testing prism and polygon mirrors in production and in quality control. The primary advantage of MOELLER-Goniometers is that arbitrary prism angl ...
... precision Goniometers and Goniometer-Spectrometers for industrial and scientific applications. Goniometers are indispensable instruments for measuring and testing prism and polygon mirrors in production and in quality control. The primary advantage of MOELLER-Goniometers is that arbitrary prism angl ...
Binocular Performance Index
... system. Limiting magnitude and maximum resolution are a function of contrast and contrast is directly related to the optical quality of the lenses. Not only must the objectives be of premium quality for best contrast but also the prisms and eyepieces must complement the quality of the objectives. Th ...
... system. Limiting magnitude and maximum resolution are a function of contrast and contrast is directly related to the optical quality of the lenses. Not only must the objectives be of premium quality for best contrast but also the prisms and eyepieces must complement the quality of the objectives. Th ...
Slide 1
... For each Backbone we regress each observers group counts for each year against those of the primary observer, and plot the result [left panel]. Experience shows that the regression line almost always very nearly goes through the origin, so we force it to do that and calculate the slope and various s ...
... For each Backbone we regress each observers group counts for each year against those of the primary observer, and plot the result [left panel]. Experience shows that the regression line almost always very nearly goes through the origin, so we force it to do that and calculate the slope and various s ...
PACS Test Facility Capabilities – Cryogenics and OGSE
... 1st cryogenic optical alignment verification test at 5 Kelvin successfully performed Cryostat equipped with test optics, PACS mass and optical focus dummy Autocollimator telescope with digital camera aligned with cryostat Additional prism optics mounted to observe ...
... 1st cryogenic optical alignment verification test at 5 Kelvin successfully performed Cryostat equipped with test optics, PACS mass and optical focus dummy Autocollimator telescope with digital camera aligned with cryostat Additional prism optics mounted to observe ...
On-sky MOAO performance evaluation of RAVEN
... One of the reasons causing this small performance difference between the MOAO and GLAO corrections is a large GL contribution during the observation of the asterism 1. The median GL fraction is 73 %, and, therefore, most of turbulence can be corrected by the GLAO mode and the advantage of the MOAO m ...
... One of the reasons causing this small performance difference between the MOAO and GLAO corrections is a large GL contribution during the observation of the asterism 1. The median GL fraction is 73 %, and, therefore, most of turbulence can be corrected by the GLAO mode and the advantage of the MOAO m ...
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.