A Wafer-Scale Membrane Transfer Process Continuous Membranes
... and assembly of optical quality, large area deformable mirrors [6] as illustrated in Fig. 2. A continuous mirror membrane, with a diameter of several tens of centimeters, constitutes the single “large” deformable mirror surface, which is mounted over an array of microactuators. The actuators themsel ...
... and assembly of optical quality, large area deformable mirrors [6] as illustrated in Fig. 2. A continuous mirror membrane, with a diameter of several tens of centimeters, constitutes the single “large” deformable mirror surface, which is mounted over an array of microactuators. The actuators themsel ...
Resonant-Cavity Light-Emitting Diodes: a review
... planar cavity will in the first place affect the extraction efficiency. The internal intensity distribution is not longer isotropic due to interference effects (or density of states effects). The basics of dipole emission in planar cavities will be shortly reviewed using a classical approach valid i ...
... planar cavity will in the first place affect the extraction efficiency. The internal intensity distribution is not longer isotropic due to interference effects (or density of states effects). The basics of dipole emission in planar cavities will be shortly reviewed using a classical approach valid i ...
Alternate Surface Measurements for GMT Primary Mirror
... While we perform loose-abrasive grinding and initial polishing of the GMT segment, the optical surface is measured using a laser tracker mounted about 22 m above the mirror surface in the test tower. To measure the surface we move a sphere-mounted retroreflector (SMR) across the surface and measure ...
... While we perform loose-abrasive grinding and initial polishing of the GMT segment, the optical surface is measured using a laser tracker mounted about 22 m above the mirror surface in the test tower. To measure the surface we move a sphere-mounted retroreflector (SMR) across the surface and measure ...
Ch 03 - Aberrations
... As noted above, the Seidel aberrations of a system in monochromatic light are called spherical aberration, coma, astigmatism, Petzval curvature, and distortion. In this section we will define each aberration and discuss its characteristics, its representation, and its effect on the appearance of the ...
... As noted above, the Seidel aberrations of a system in monochromatic light are called spherical aberration, coma, astigmatism, Petzval curvature, and distortion. In this section we will define each aberration and discuss its characteristics, its representation, and its effect on the appearance of the ...
Mini Talk
... The Value of Strehl A perfect optical setup with no atmospheric distortions would give a Strehl of 1.0 . Realistically, any optical setup with a Strehl of 0.8 would be considered diffraction limited. Here are some corrected Strehl values of telescopes across the globe: ...
... The Value of Strehl A perfect optical setup with no atmospheric distortions would give a Strehl of 1.0 . Realistically, any optical setup with a Strehl of 0.8 would be considered diffraction limited. Here are some corrected Strehl values of telescopes across the globe: ...
Module P6.3 Optical elements: prisms, lenses and spherical mirrors
... mirrors. This module describes these optical elements and introduces you to the equations which govern their operation and which can be used in their design. The operation of all these optical elements depends on the known behaviour of light rays when reflected from mirrors or refracted at the bound ...
... mirrors. This module describes these optical elements and introduces you to the equations which govern their operation and which can be used in their design. The operation of all these optical elements depends on the known behaviour of light rays when reflected from mirrors or refracted at the bound ...
Focal shift of silicon microlen array in mid
... The focal shift of the silicon microlens in the mid-infrared regime was numerical modeled and experimentally verified. We found that traditional methods provide limited validity in predicting the focal length of MLAs with small critical size and in long wavelength bands. As a result rigorous electro ...
... The focal shift of the silicon microlens in the mid-infrared regime was numerical modeled and experimentally verified. We found that traditional methods provide limited validity in predicting the focal length of MLAs with small critical size and in long wavelength bands. As a result rigorous electro ...
Planets Around M-dwarfs – Astrometric Detection and Orbit
... archetype for a new class of affordable AO sys- coverage can be accessed with < 230 milliarcsecond H-band resolution, while 90% sky covtem deployable on 1-3 meter telescopes. CAMERA will provide a unique new ca- erage can be accessed with < 300 milliarcsecpability for large adaptive optics surveys c ...
... archetype for a new class of affordable AO sys- coverage can be accessed with < 230 milliarcsecond H-band resolution, while 90% sky covtem deployable on 1-3 meter telescopes. CAMERA will provide a unique new ca- erage can be accessed with < 300 milliarcsecpability for large adaptive optics surveys c ...
Intensity Interferometry toward high resolution
... be used to measure angular diameters of stars. He thought of using such a Young’s slits configuration in front of a telescope to produce interference of the light coming from a star and deduce its angular extent. The idea was suggested for the Prix Bordin awarded by the Académie des Sciences alread ...
... be used to measure angular diameters of stars. He thought of using such a Young’s slits configuration in front of a telescope to produce interference of the light coming from a star and deduce its angular extent. The idea was suggested for the Prix Bordin awarded by the Académie des Sciences alread ...
Support Astronomer Position - Gran Telescopio CANARIAS
... The GTC, with a diameter of 10.4 metres, is the largest single aperture telescope in the world and it is in operation since March 2009. The GTC is sited at the Roque de los Muchachos Observatory (ORM) on the island of La Palma (Canary Islands) which is a world-class observatory and the best site in ...
... The GTC, with a diameter of 10.4 metres, is the largest single aperture telescope in the world and it is in operation since March 2009. The GTC is sited at the Roque de los Muchachos Observatory (ORM) on the island of La Palma (Canary Islands) which is a world-class observatory and the best site in ...
pptx - The University of Arizona College of Optical Sciences
... Anchor Optics – www.anchoroptics.com • Safe-Glo ($19, 2′ W x2′ L) • Lens Grab Bag ($7.95, 20 lenses, PCX, DCX, etc.) • Half Lenses ($4.50 PCX, $7.00 DCX) • Plastic Lenses ($5.00 DCX, 150mm f.l., packs of 10) • Demonstration Lens Set ($7.50, $11, $18, same dia./different f.l., same f.l./different dia ...
... Anchor Optics – www.anchoroptics.com • Safe-Glo ($19, 2′ W x2′ L) • Lens Grab Bag ($7.95, 20 lenses, PCX, DCX, etc.) • Half Lenses ($4.50 PCX, $7.00 DCX) • Plastic Lenses ($5.00 DCX, 150mm f.l., packs of 10) • Demonstration Lens Set ($7.50, $11, $18, same dia./different f.l., same f.l./different dia ...
EQUIPMENT
... However, PROMPT's control software—called Skynet—is well written and can identify most failures as they occur. If Skynet identifies a failure, either (1) it corrects it itself, or (2) if it cannot, it communicates the failure to Dr. Reichart's group (by both email and text message). Dr. Reichart's g ...
... However, PROMPT's control software—called Skynet—is well written and can identify most failures as they occur. If Skynet identifies a failure, either (1) it corrects it itself, or (2) if it cannot, it communicates the failure to Dr. Reichart's group (by both email and text message). Dr. Reichart's g ...
Novel Use of Photovoltaics for Backup Spacecraft Laser
... performed using Radio Frequency (RF). RF is a wellestablished and well-regulated technology that enables communication over long distances as proven by the Voyager 1 & II missions. However, RF requires licensing of very limited radio spectrum and this poses a challenge in the future, particularly wi ...
... performed using Radio Frequency (RF). RF is a wellestablished and well-regulated technology that enables communication over long distances as proven by the Voyager 1 & II missions. However, RF requires licensing of very limited radio spectrum and this poses a challenge in the future, particularly wi ...
... with the BAM structure these mirrors are less sensitive to temperature changes and the required tilt stability of less than 2 micro-rad is mainly influenced by mechanical vibration and shock loads during launch and PLM bi-pod release. For the transmissive beam splitters, made of Fused Silica and hav ...
24 Geometrical Optics
... In deriving Eq. (24.2), 1/fa = (nl − 1)(1/R1 − 1/R2 ), we made use of the Law of Refraction for a light ray entering the lens from air: ni sin θi = nt sin θt , or sin θt = (nt /ni ) sin θi . Here i stands for air and t for the glass. Taking ni = nair = 1 and nt = nl , this becomes ...
... In deriving Eq. (24.2), 1/fa = (nl − 1)(1/R1 − 1/R2 ), we made use of the Law of Refraction for a light ray entering the lens from air: ni sin θi = nt sin θt , or sin θt = (nt /ni ) sin θi . Here i stands for air and t for the glass. Taking ni = nair = 1 and nt = nl , this becomes ...
High-order wavefront sensing system for PALM-3000 Christoph Baranec
... To maintain closed-loop stability and minimum registration error between the deformable mirrors and wavefront sensor, an absolute mismatch tolerance of 10-15% of a subaperture has been adopted in the design, with a tighter 5% stability requirement during an hour long exposure. This tolerance raises ...
... To maintain closed-loop stability and minimum registration error between the deformable mirrors and wavefront sensor, an absolute mismatch tolerance of 10-15% of a subaperture has been adopted in the design, with a tighter 5% stability requirement during an hour long exposure. This tolerance raises ...
Is Pluto Real - Jesseca Rough
... Hubble space telescope worked. “How does the telescope fly through space?” “How does a telescope take pictures?”” How big is the telescope?”, “Who invented the telescope?” All of which reluctantly, I had no clue about. I guess I should have done more research about the telescope, but since my topic ...
... Hubble space telescope worked. “How does the telescope fly through space?” “How does a telescope take pictures?”” How big is the telescope?”, “Who invented the telescope?” All of which reluctantly, I had no clue about. I guess I should have done more research about the telescope, but since my topic ...
The Optical Resonator
... § All the modes would have comparable Q in the 3D resonator – To be avoided in a laser as it would cause all the atoms to emit power into a large number of modes (would differ in their frequency and spatial characteristics) § Large, open resonators consisting of opposite flat/curved reflectors mus ...
... § All the modes would have comparable Q in the 3D resonator – To be avoided in a laser as it would cause all the atoms to emit power into a large number of modes (would differ in their frequency and spatial characteristics) § Large, open resonators consisting of opposite flat/curved reflectors mus ...
optimizing the performance of as-manufactured grazing incidence x
... telescopes have only been conceived and designed for a little over fifty (50) years. The Wolter Type I design is particularly well suited for stellar astronomical telescopes (very small field-ofview). The first orbiting X-ray observatory, HEAO-1 was launched in 1977, a mere twenty-eight (28) years a ...
... telescopes have only been conceived and designed for a little over fifty (50) years. The Wolter Type I design is particularly well suited for stellar astronomical telescopes (very small field-ofview). The first orbiting X-ray observatory, HEAO-1 was launched in 1977, a mere twenty-eight (28) years a ...
A Multiple-Beam Interferometer for Use with
... There are numerous uses to which the instrument can be put, in addition to testing spheres. Figure 9 shows four other possibilities. Any autostigmatic system can be evaluated if its absorption is not too high or if it is not so poor in quality that the wavefront in double transmission is deformed by ...
... There are numerous uses to which the instrument can be put, in addition to testing spheres. Figure 9 shows four other possibilities. Any autostigmatic system can be evaluated if its absorption is not too high or if it is not so poor in quality that the wavefront in double transmission is deformed by ...
Cvetojevic_PIMMS_11 - School of Physics
... Existing spectrographs for astronomy are very large, full of custom built parts, and very expensive ...
... Existing spectrographs for astronomy are very large, full of custom built parts, and very expensive ...
Transparencies - Rencontres de Moriond
... 0.010 mag (zero-point across the sky). Relative astrometric accuracy of 10 mas. ...
... 0.010 mag (zero-point across the sky). Relative astrometric accuracy of 10 mas. ...
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.