System Level # Requirements Document
... These broad science goals have motivated a set of science-driven observatory capabilities and requirements that are described in this document, representing the consensus view of the Science Advisory Committee and the Project Scientist, after consultation with many expert engineers and scientists wi ...
... These broad science goals have motivated a set of science-driven observatory capabilities and requirements that are described in this document, representing the consensus view of the Science Advisory Committee and the Project Scientist, after consultation with many expert engineers and scientists wi ...
On the telescopic disks of stars-a review and analysis of stellar
... be owing to any real difference in the stars, as the intervention of a cloud, which reduces their brightness, reduces also their apparent discs till they become mere points. Nor can it be attributed to irradiation, or propagation of the impression from the point on the retina to a distance, as in th ...
... be owing to any real difference in the stars, as the intervention of a cloud, which reduces their brightness, reduces also their apparent discs till they become mere points. Nor can it be attributed to irradiation, or propagation of the impression from the point on the retina to a distance, as in th ...
Handout Building the demonstration refractor tube
... m and http://www.pacifier.com/~tpope/Scope_Details.htm accessed 5/2006 (plans and links to other sites with plans for replicas for building a Galilean telescopes, “under $50” U.S.D. per website) ...
... m and http://www.pacifier.com/~tpope/Scope_Details.htm accessed 5/2006 (plans and links to other sites with plans for replicas for building a Galilean telescopes, “under $50” U.S.D. per website) ...
Optics and Telescopes PowerPoint
... problem of chromatic aberration is worst with “fast” or low f-ratio lenses. These are the lenses we’d like to use most! • The problem is fixed by making compound lenses out of 2 or more different kinds of glass. • Mirror-based telescopes don’t have this problem – a definite advantage! ...
... problem of chromatic aberration is worst with “fast” or low f-ratio lenses. These are the lenses we’d like to use most! • The problem is fixed by making compound lenses out of 2 or more different kinds of glass. • Mirror-based telescopes don’t have this problem – a definite advantage! ...
Unstable optical resonators
... The system images magnified version of coupling aperture onto itself after each round-trip. If self-imaging condition f1 + f2 = ML1 + L2/M is satisfied, then B=0 in cavity descriptive matrix, then each roundtrip has zero effective propagation length, so the resonator has infinitely high Fresnel numb ...
... The system images magnified version of coupling aperture onto itself after each round-trip. If self-imaging condition f1 + f2 = ML1 + L2/M is satisfied, then B=0 in cavity descriptive matrix, then each roundtrip has zero effective propagation length, so the resonator has infinitely high Fresnel numb ...
Success, Truth, and the Galilean Strategy
... GS1k Inferring truth from success provides correct answers up to and along the vague boundary between the observable and the unobservable. Of course, ‘success’ must be understood in a rather strict way. If the querist’s only goal is to give up smoking, then the correlation with truth will not be rob ...
... GS1k Inferring truth from success provides correct answers up to and along the vague boundary between the observable and the unobservable. Of course, ‘success’ must be understood in a rather strict way. If the querist’s only goal is to give up smoking, then the correlation with truth will not be rob ...
Comparison of Phase Diversity and Curvature Wavefront Sensing
... figure, we have also shown the corresponding Bayes CRB, assuming the object is known, which takes into account that the aberration satisfies the Kolmogorov Gaussian model. As expected (as described in the previous paragraph), the Bayes CRB is significantly lower than any of the 10 deterministic CRBs ...
... figure, we have also shown the corresponding Bayes CRB, assuming the object is known, which takes into account that the aberration satisfies the Kolmogorov Gaussian model. As expected (as described in the previous paragraph), the Bayes CRB is significantly lower than any of the 10 deterministic CRBs ...
The Hubble Space Telescope
... to see things the naked eye cannot. As the telescope took shape, it began to look like a tin can covered with aluminum foil. That is because Hubble is coated with blankets of Teflon, aluminum, and other protective layers that help keep its temperature steady in space. 9 Hubble was supposed to be la ...
... to see things the naked eye cannot. As the telescope took shape, it began to look like a tin can covered with aluminum foil. That is because Hubble is coated with blankets of Teflon, aluminum, and other protective layers that help keep its temperature steady in space. 9 Hubble was supposed to be la ...
497 Autostar Manual for DS-2090AT-TC and DS-2102AT-TC
... is useful when the telescope slews to an object, but that object is not visible in the eyepiece after the telescope finishes its search. (This sometimes occurs during an alignment procedure.) Press GO TO when the slew is finished and the telescope starts slewing in a spiral pattern at a very slow sp ...
... is useful when the telescope slews to an object, but that object is not visible in the eyepiece after the telescope finishes its search. (This sometimes occurs during an alignment procedure.) Press GO TO when the slew is finished and the telescope starts slewing in a spiral pattern at a very slow sp ...
DOBSONIAN TELESCOPE - Raleigh Astronomy Club
... Welcome to the Celestron world of amateur astronomy! For more than a quarter of a century, Celestron has provided amateur astronomers with the tools needed to explore the universe. The Celestar line of telescopes continue in this proud tradition combining large aperture optics with ease of use and p ...
... Welcome to the Celestron world of amateur astronomy! For more than a quarter of a century, Celestron has provided amateur astronomers with the tools needed to explore the universe. The Celestar line of telescopes continue in this proud tradition combining large aperture optics with ease of use and p ...
High speed and High precision pyramid wavefront sensor. In labs
... Since the introduction of the pyramid wavefront sensor [P-WFS] concept (Ragazzoni), numerous investigations have clearly shown its ability to achieve better performance (sensitivity, dynamic range) than the standard Shack-Hartman [SH-WFS]. It has recently been successfully implemented on LBT and has ...
... Since the introduction of the pyramid wavefront sensor [P-WFS] concept (Ragazzoni), numerous investigations have clearly shown its ability to achieve better performance (sensitivity, dynamic range) than the standard Shack-Hartman [SH-WFS]. It has recently been successfully implemented on LBT and has ...
FGS1R: Potentially HST`s Astrometry Science Workhorse
... In order to illustrate the perfomance capabilities of FGS3 and FGS1R, we have generated a series of synthetic S-Curves of binary systems. A simple schematic of a binary orbit and resulting S-Curves are given in Figure 4. The composite S-Curve of a multiple system is a linear superposition of the S-C ...
... In order to illustrate the perfomance capabilities of FGS3 and FGS1R, we have generated a series of synthetic S-Curves of binary systems. A simple schematic of a binary orbit and resulting S-Curves are given in Figure 4. The composite S-Curve of a multiple system is a linear superposition of the S-C ...
Adaptive Optics
... AO systems have limitations (e.g. light loss, IR emissivity driven by the large number of optical surfaces) but more fundamental are limits imposed by the guiding star, which is monitored by the wavefront sensor, and is likely to be different from the science target ...
... AO systems have limitations (e.g. light loss, IR emissivity driven by the large number of optical surfaces) but more fundamental are limits imposed by the guiding star, which is monitored by the wavefront sensor, and is likely to be different from the science target ...
WWT Web Client - WorldWide Telescope
... HTML5 SDK OVERVIEW • Essentially WWT – Light. Designed to render most common WWT features within the browser. ...
... HTML5 SDK OVERVIEW • Essentially WWT – Light. Designed to render most common WWT features within the browser. ...
Characterization of high-finesse mirrors: Loss, phase shifts, and
... The strong-coupling condition ⍀ 1 Ⰷ( ␥⬜ , ) is achieved by using a small cavity length, of the order of 10 m. Precise measurement of the length of a short optical cavity facilitates the determination of mirror-coating characteristics. A 10 m cavity length translates to a free spectral range 共F ...
... The strong-coupling condition ⍀ 1 Ⰷ( ␥⬜ , ) is achieved by using a small cavity length, of the order of 10 m. Precise measurement of the length of a short optical cavity facilitates the determination of mirror-coating characteristics. A 10 m cavity length translates to a free spectral range 共F ...
UCO Focus - Lick Observatory
... billionth of a second. Interstellar gas and dust is almost transparent to near infrared, so these signals can be seen from great distances. It also takes less energy to send UCO Focus Spring 2015 ...
... billionth of a second. Interstellar gas and dust is almost transparent to near infrared, so these signals can be seen from great distances. It also takes less energy to send UCO Focus Spring 2015 ...
Mapping the Milky Way: William Herschel`s Star-‐Gages
... Herschel described his star gage method in 1784.3 In 1785 he published his results:4 star-‐gages of 683 regions in the sky, forming a circle running through the galactic poles and crossing the plan ...
... Herschel described his star gage method in 1784.3 In 1785 he published his results:4 star-‐gages of 683 regions in the sky, forming a circle running through the galactic poles and crossing the plan ...
PACS Calibration Status and Plans
... - asteroids (50) in flux range 1 Jy – 500 Jy & planets (Neptune, Uranus) 3) linearity assessment - asteroids (50) in flux range 1 Jy – 500 Jy & planets (Neptune, Uranus) 4) flat-field assessment - bright compact secondary calibrators and spectral PSF standards 5) reproducibility - primary & secondar ...
... - asteroids (50) in flux range 1 Jy – 500 Jy & planets (Neptune, Uranus) 3) linearity assessment - asteroids (50) in flux range 1 Jy – 500 Jy & planets (Neptune, Uranus) 4) flat-field assessment - bright compact secondary calibrators and spectral PSF standards 5) reproducibility - primary & secondar ...
From Musician to Astronomer: The Great William Herschel
... nature of nebulae that were neglected by professional astronomers of his day • Herschel introduced notion of evolutionary changes in astronomical bodies, and also attempted to find their distances • Today is considered the “Father of Modern Astronomy” ...
... nature of nebulae that were neglected by professional astronomers of his day • Herschel introduced notion of evolutionary changes in astronomical bodies, and also attempted to find their distances • Today is considered the “Father of Modern Astronomy” ...
IX71/IX81 - Olympus Microscopy Resource Center
... As new fluorochromes are developed and new methods of light excitation and manipulation become more popular for live cell experiments, more and more researchers will require the use of low phototoxicity near-IR wavelengths in addition to the conventional visible spectrum. Olympus has equipped its IX ...
... As new fluorochromes are developed and new methods of light excitation and manipulation become more popular for live cell experiments, more and more researchers will require the use of low phototoxicity near-IR wavelengths in addition to the conventional visible spectrum. Olympus has equipped its IX ...
3-DIMENSIONAL SPECTROSCOPIC-TOMOGRAPHY OF BIOLOGICAL MEMBRANE BY THE IMAGING-TYPE 2-D FOURIER SPECTROSCOPY
... could be obtained. We also proved that these spectral characteristics could be obtained from any pixel in an arbitrary image using visible light. Cell tomogram ...
... could be obtained. We also proved that these spectral characteristics could be obtained from any pixel in an arbitrary image using visible light. Cell tomogram ...
Finite number of Guide Star
... • To circumvent the sky coverage problem, several ways have been devised and are actively pursued: 1. Multi-Conjugate Adaptive Optics (MCAO) 2. Multi Object Adaptive Optics (MOAO) 3. Ground Layer Adaptive Optics (GLAO) 4. Laser Tomography Adaptive Optics (LTAO) ...
... • To circumvent the sky coverage problem, several ways have been devised and are actively pursued: 1. Multi-Conjugate Adaptive Optics (MCAO) 2. Multi Object Adaptive Optics (MOAO) 3. Ground Layer Adaptive Optics (GLAO) 4. Laser Tomography Adaptive Optics (LTAO) ...
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.