Discovery of Cluster-Scale Lensed Quasars using the Subaru
... M.Oguri, T.Broadhurst, E.Falco et al. ...
... M.Oguri, T.Broadhurst, E.Falco et al. ...
Principles, Limitations and Performance of Multi
... The very crude analytical approach proposed above seem to describe quite well the amplitude of the generalized tting error, at least for this kind of systems. An arbitrary limit to h when designing a MCAO system is to have both terms of Eq 3 balanced (classical tting and generalized tting erro ...
... The very crude analytical approach proposed above seem to describe quite well the amplitude of the generalized tting error, at least for this kind of systems. An arbitrary limit to h when designing a MCAO system is to have both terms of Eq 3 balanced (classical tting and generalized tting erro ...
Operating Manual
... CCD cameras and represent the state of the art in CCD camera systems with their low noise and advanced capabilities, including Kodak's new Blue Enhanced E series of CCDs. We feel that these cameras will expand your astronomy experience by being able to easily take images like the ones you've seen in ...
... CCD cameras and represent the state of the art in CCD camera systems with their low noise and advanced capabilities, including Kodak's new Blue Enhanced E series of CCDs. We feel that these cameras will expand your astronomy experience by being able to easily take images like the ones you've seen in ...
English - Keeler Support
... As well as giving you the highest optical quality, our stringent manufacturing controls ensure that you will obtain many years of trouble free use from your Loupes. Before attempting to work with your Loupes and in order that you obtain the best from them, we recommend that you take the time to care ...
... As well as giving you the highest optical quality, our stringent manufacturing controls ensure that you will obtain many years of trouble free use from your Loupes. Before attempting to work with your Loupes and in order that you obtain the best from them, we recommend that you take the time to care ...
SurplusShed • www.SurplusShed.com
... by 5mm thick. Has vertical and horizontal dashed lines going 3/4 of the way up the center. Markings on left and right side: 8, 12, 16, 20, 24, and 28. A1601 $4.00 ANOTHER ANTIQUE 41MM RETICLE A great find. These are in the original package. Marked "STOCK NO. 2028. ONE RETICLE - MARK 2. DIAMETER 41 M ...
... by 5mm thick. Has vertical and horizontal dashed lines going 3/4 of the way up the center. Markings on left and right side: 8, 12, 16, 20, 24, and 28. A1601 $4.00 ANOTHER ANTIQUE 41MM RETICLE A great find. These are in the original package. Marked "STOCK NO. 2028. ONE RETICLE - MARK 2. DIAMETER 41 M ...
Basic Wavefront Aberration Theory for Optical Metrology
... aberration formulas, because the Seidel aberrations and Zernike coefficients are circularly symmetric. The relationship between rectangular and polar coordinates as used in this chapter is shown in Fig. 4b. Angles increase in the counterclockwise direction, -and the zero angle is along the x axis wh ...
... aberration formulas, because the Seidel aberrations and Zernike coefficients are circularly symmetric. The relationship between rectangular and polar coordinates as used in this chapter is shown in Fig. 4b. Angles increase in the counterclockwise direction, -and the zero angle is along the x axis wh ...
Deposition and Characterization of Dielectric Distributed Bragg
... The Vertical Cavity Surface Emitting Laser (VCSEL) is a laser well suited for data centre applications due to its low cost, high speeds, good fiber coupling, and low threshold current The current standard wavelength for short-haul is 850 nm, however switching to 980 nm can improve transmission dista ...
... The Vertical Cavity Surface Emitting Laser (VCSEL) is a laser well suited for data centre applications due to its low cost, high speeds, good fiber coupling, and low threshold current The current standard wavelength for short-haul is 850 nm, however switching to 980 nm can improve transmission dista ...
Extreme Energy Events (EEE) – Science inside Schools The EEE
... - the "Enrico Fermi" Historical Museum of Physics and Centre for Studies and Research (Enrico Fermi Centre), - various high schools and technical institutes, involved in the Project. The EEE Project is a large experiment whose main goal is the investigation of the origin of cosmic rays. The experime ...
... - the "Enrico Fermi" Historical Museum of Physics and Centre for Studies and Research (Enrico Fermi Centre), - various high schools and technical institutes, involved in the Project. The EEE Project is a large experiment whose main goal is the investigation of the origin of cosmic rays. The experime ...
Astronomical Adaptive Optics using Multiple Laser Guide Stars
... Figure 3-6. Pupil model of the NGS WFS camera ............................................ 70 Figure 3-7. Power spectrum from a measured LGS mode ............................... 78 Figure 3-8. Measured r0 by Zernike radial order ............................................... 83 Figure 3-9. Wavefron ...
... Figure 3-6. Pupil model of the NGS WFS camera ............................................ 70 Figure 3-7. Power spectrum from a measured LGS mode ............................... 78 Figure 3-8. Measured r0 by Zernike radial order ............................................... 83 Figure 3-9. Wavefron ...
About the Hubble Space Telescope
... The servicing mission in 1999 enhanced many of Hubble’s subsystems, including the central computer, a new solid-state data-recording system to replace the aging magnetic tape drives, and the gyroscopes needed for pointing control. A month prior to launch, a gyroscope failure had forced Hubble into ...
... The servicing mission in 1999 enhanced many of Hubble’s subsystems, including the central computer, a new solid-state data-recording system to replace the aging magnetic tape drives, and the gyroscopes needed for pointing control. A month prior to launch, a gyroscope failure had forced Hubble into ...
mach-zehnder wavefront sensor for phasing of segmented
... intersegment gaps provides a convenient way to register the pupil. That can be achieved by removing the pinhole, filters and recording white light images of the pupil. These images will show the exact location of the segment boundaries and hence will indicate where the signal is to be measured. The ...
... intersegment gaps provides a convenient way to register the pupil. That can be achieved by removing the pinhole, filters and recording white light images of the pupil. These images will show the exact location of the segment boundaries and hence will indicate where the signal is to be measured. The ...
OPTI 517 Image Quality
... Encircled or ensquared energy is the ratio of the energy in the PSF that is collected by a single circular or square detector to the total amount of energy that reaches the image plane from that object point – This is a popular metric for system engineers who, reasonably enough, want a certain amoun ...
... Encircled or ensquared energy is the ratio of the energy in the PSF that is collected by a single circular or square detector to the total amount of energy that reaches the image plane from that object point – This is a popular metric for system engineers who, reasonably enough, want a certain amoun ...
Chromatic aberration in petawatt-class lasers - hb.fh
... of chromatic aberrations[9, 10]. To quantitatively predict the impact, a full wave-optics solution of the short-pulse propagation is required. Numerical solutions of the spatio-temporal intensity distribution in the focus of a singlet lens in the presence of chromatic aberration have been shown by K ...
... of chromatic aberrations[9, 10]. To quantitatively predict the impact, a full wave-optics solution of the short-pulse propagation is required. Numerical solutions of the spatio-temporal intensity distribution in the focus of a singlet lens in the presence of chromatic aberration have been shown by K ...
united states district court
... important modification of the classical Cassegrain two mirror telescope. It was invented by George Willis Ritchey and Henri Chrétien in the early 20th century; the first Ritchey-Chretien was made for the U.S. Naval Observatory in the 1930s. The Ritchey-Chretien design is a specialized Cassegrain ref ...
... important modification of the classical Cassegrain two mirror telescope. It was invented by George Willis Ritchey and Henri Chrétien in the early 20th century; the first Ritchey-Chretien was made for the U.S. Naval Observatory in the 1930s. The Ritchey-Chretien design is a specialized Cassegrain ref ...
Get PDF - OSA Publishing
... The precision alignment of the optical systems of relatively small fields of view (e.g. less than 0.1 degree) can be achieved efficiently by measuring the on-axis interferogram. However, it becomes a lengthy and time consuming task to align optical systems with relatively large fields of view or tho ...
... The precision alignment of the optical systems of relatively small fields of view (e.g. less than 0.1 degree) can be achieved efficiently by measuring the on-axis interferogram. However, it becomes a lengthy and time consuming task to align optical systems with relatively large fields of view or tho ...
Shearer et al Observations of Fermi Pulsars 2009-10
... We will be requesting more time under the International Time Programme primarily to use the time resolved camera systems UltraCam, Optima and GASP. We are particularly interested in polarisation measurements as these give a unique insight into the geometry of the emission region - these observations ...
... We will be requesting more time under the International Time Programme primarily to use the time resolved camera systems UltraCam, Optima and GASP. We are particularly interested in polarisation measurements as these give a unique insight into the geometry of the emission region - these observations ...
Differential measurement of atmospheric
... and direct simple idea is that the two sky regions can be observed simultaneous by a binocular telescope. But under the influence of the gravity and ambient temperature change, the tubes and the bracket of the binocular telescope may produce different deformation inevitably in the process of measurem ...
... and direct simple idea is that the two sky regions can be observed simultaneous by a binocular telescope. But under the influence of the gravity and ambient temperature change, the tubes and the bracket of the binocular telescope may produce different deformation inevitably in the process of measurem ...
pdf
... convolving the chart with the point spread functions corresponding to individual Zernike modes. These simulations were then viewed through a small pupil to approximate the retinal images that would have been formed had these aberrations existed in the eye’s pupil plane. Their experiments have shown ...
... convolving the chart with the point spread functions corresponding to individual Zernike modes. These simulations were then viewed through a small pupil to approximate the retinal images that would have been formed had these aberrations existed in the eye’s pupil plane. Their experiments have shown ...
File
... lens such that a beam of light incident parallel to the principal axis, after refraction from the lens, pass through it (convex lens) or appear to be diverging from this point (concave lens). ...
... lens such that a beam of light incident parallel to the principal axis, after refraction from the lens, pass through it (convex lens) or appear to be diverging from this point (concave lens). ...
New initiatives - Major Instrumentation
... Multi-Object Multi-Fiber Optical Spectrograph (MOMFOS) • 20 arc-minute field at f/1 Prime Focus • 60-meter fiber cable • 700 0.7” fibers ...
... Multi-Object Multi-Fiber Optical Spectrograph (MOMFOS) • 20 arc-minute field at f/1 Prime Focus • 60-meter fiber cable • 700 0.7” fibers ...
PowerPoint
... The Doppler Effect The effect arises from the relative motion of the observer and the source of light, sound, etc. The waves get squashed in the direction of motion and stretched in the opposite direction. ...
... The Doppler Effect The effect arises from the relative motion of the observer and the source of light, sound, etc. The waves get squashed in the direction of motion and stretched in the opposite direction. ...
Project Manager Presentation to the TMT Board
... High throughput (85% in J, H, K, and I bands) Low thermal emission (15% of sky + telescope) Diffraction-limited IR image quality on a moderate FoV – [187, 191, 208] nm wavefront error over a [0,17,30] arc sec field ...
... High throughput (85% in J, H, K, and I bands) Low thermal emission (15% of sky + telescope) Diffraction-limited IR image quality on a moderate FoV – [187, 191, 208] nm wavefront error over a [0,17,30] arc sec field ...
9 adaptive optics - Giant Magellan Telescope
... In many instances the optimum AO solution is likely to require incorporation into the GMT telescope itself, rather than development of some black box later. Thus an overriding consideration in designing the GMT has been to try to anticipate these features and build them in. We have built on our AO ...
... In many instances the optimum AO solution is likely to require incorporation into the GMT telescope itself, rather than development of some black box later. Thus an overriding consideration in designing the GMT has been to try to anticipate these features and build them in. We have built on our AO ...
Lab 11: The Compound Microscope
... Binoculars have low magnification compared to many other telescopes. The size of the objective in any telescope determines the ultimate theoretical resolution (as described by physical optics, diffraction, and the Raleigh Limit). In order to resolve two point source objects, the objective must first ...
... Binoculars have low magnification compared to many other telescopes. The size of the objective in any telescope determines the ultimate theoretical resolution (as described by physical optics, diffraction, and the Raleigh Limit). In order to resolve two point source objects, the objective must first ...
Semester 2016B - Gran Telescopio CANARIAS
... telescope and instrument commissioning work that will preferentially be carried out during bright time. The remaining 80% will be dedicated to programs that are granted time under this call, as well as guaranteed time for instrument builders and for the CCI International Time. We note that the RA ba ...
... telescope and instrument commissioning work that will preferentially be carried out during bright time. The remaining 80% will be dedicated to programs that are granted time under this call, as well as guaranteed time for instrument builders and for the CCI International Time. We note that the RA ba ...
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.