LHDC High-Performance Fine-Steering Mirror Family
... – Fine-steering mechanism or fast-steering mechanism: two-axis reducedaperture, full-aperture steering mirror or isolation system – Coarse-pointing mechanism: vehicle attitude control system, two-axis gimbaled telescope or full-aperture steering mirror Payload motion sensor suite: inertially or opti ...
... – Fine-steering mechanism or fast-steering mechanism: two-axis reducedaperture, full-aperture steering mirror or isolation system – Coarse-pointing mechanism: vehicle attitude control system, two-axis gimbaled telescope or full-aperture steering mirror Payload motion sensor suite: inertially or opti ...
U17301 - 3B Scientific
... Reflection of light on one edge of glass prism E11b Reflection of light on two edges of glass prism E11c Reflection of light on two glass prisms E11d Reflection of light on two glass prisms E11e Reflection of light on two glass prisms E12 Reflection of light on air prisms E13a Light ray passing a co ...
... Reflection of light on one edge of glass prism E11b Reflection of light on two edges of glass prism E11c Reflection of light on two glass prisms E11d Reflection of light on two glass prisms E11e Reflection of light on two glass prisms E12 Reflection of light on air prisms E13a Light ray passing a co ...
J.Marque: Mode matching of the Virgo FP cavities
... telescope in order to match the mode parameters of the input beam (waist size, distance to waist) to the cavity eigenmodes (radius of curvature of the mirrors of the cavity, length of the cavity). o This action can be performed by adjusting the position of the various optical elements of the telesco ...
... telescope in order to match the mode parameters of the input beam (waist size, distance to waist) to the cavity eigenmodes (radius of curvature of the mirrors of the cavity, length of the cavity). o This action can be performed by adjusting the position of the various optical elements of the telesco ...
Celestron Telescope Accessory Catalog
... Diagonals: .96" and 11/4" Celestron’s Erect Image Diagonals are an Amici prism design. This design allows you to look into the telescope at a 45° angle, at images that are oriented properly, meaning the image is upright and correct from left to right. Use of Celestron’s .96" to 11/4" 45° Erect Image ...
... Diagonals: .96" and 11/4" Celestron’s Erect Image Diagonals are an Amici prism design. This design allows you to look into the telescope at a 45° angle, at images that are oriented properly, meaning the image is upright and correct from left to right. Use of Celestron’s .96" to 11/4" 45° Erect Image ...
Lab 5: Index of Refraction
... the cross hairs with spectral lines. You will want to use this function for the experiment to get the best reading. The focus knobs of the collimator and telescope should not need adjusting. If you think they need to be adjusted, see the alignment procedures. If you move one of these knobs, try to r ...
... the cross hairs with spectral lines. You will want to use this function for the experiment to get the best reading. The focus knobs of the collimator and telescope should not need adjusting. If you think they need to be adjusted, see the alignment procedures. If you move one of these knobs, try to r ...
The Space-Based Visible Sensor - The Johns Hopkins University
... timing with the other SBV elements, and provides a low-noise 12-bit digitized readout. The camera uses a fully redundant, dual-channel architecture for fault tolerance, where only one channel is powered at a time. The camera has two commandable gains and up to five different integration times. The g ...
... timing with the other SBV elements, and provides a low-noise 12-bit digitized readout. The camera uses a fully redundant, dual-channel architecture for fault tolerance, where only one channel is powered at a time. The camera has two commandable gains and up to five different integration times. The g ...
LHDC High-Performance Fine-Steering Mirror Family
... – Fine-steering mechanism or fast-steering mechanism: two-axis reducedaperture, full-aperture steering mirror or isolation system – Coarse-pointing mechanism: vehicle attitude control system, two-axis gimbaled telescope or full-aperture steering mirror In general, both fine-and course-pointing mecha ...
... – Fine-steering mechanism or fast-steering mechanism: two-axis reducedaperture, full-aperture steering mirror or isolation system – Coarse-pointing mechanism: vehicle attitude control system, two-axis gimbaled telescope or full-aperture steering mirror In general, both fine-and course-pointing mecha ...
Tutorial Solutions - School of Physics and Astronomy
... (Can also get “roof-prism” style binoculars that have the eyepiece and front objective in-line. These use a double dove prism and are more compact and rugged, however the optics are more complex and they are very much more expensive to make.) Binoculars are specified by Magnification Objective siz ...
... (Can also get “roof-prism” style binoculars that have the eyepiece and front objective in-line. These use a double dove prism and are more compact and rugged, however the optics are more complex and they are very much more expensive to make.) Binoculars are specified by Magnification Objective siz ...
Optics - Jnoodle
... in the opposite direction, it should follow the same path back (it can be shown by swapping 1 and 2 that rays are reversible) and therefore only light coming from air and leaving surface at an angle of refraction smaller than C can reach an observer at the bottom. A diver looking up from the bott ...
... in the opposite direction, it should follow the same path back (it can be shown by swapping 1 and 2 that rays are reversible) and therefore only light coming from air and leaving surface at an angle of refraction smaller than C can reach an observer at the bottom. A diver looking up from the bott ...
Infrared spatial interferometer (ISI) scientists, technicians, students
... Currently located at Mt. Wilson Observatory, a site noted for very stable seeing. Two telescopes in operation 1988 First fringes 1989 Third telescope 2003 Closure phase measured 2004 ...
... Currently located at Mt. Wilson Observatory, a site noted for very stable seeing. Two telescopes in operation 1988 First fringes 1989 Third telescope 2003 Closure phase measured 2004 ...
CHAPTER 5: LIGHT
... ii) The object must be placed at a distance (more than f / same as f / less than f / between f and 2f / more than 2f) in order for the lens to act as a magnifying glass. iii) The characteristics of the image formed by a magnifying glass are yang (real / virtual) ; (inverted / upright) ; (magnified / ...
... ii) The object must be placed at a distance (more than f / same as f / less than f / between f and 2f / more than 2f) in order for the lens to act as a magnifying glass. iii) The characteristics of the image formed by a magnifying glass are yang (real / virtual) ; (inverted / upright) ; (magnified / ...
Cloaking at Optical Frequencies - Cornell ECE
... The cloaking device is composed of a spatially varying density of sub-wavelength 50 nm diameter silicon posts embedded in an SiO2 medium, and the reflective surface consists of a distributed Bragg reflector (DBR). The distribution of posts induces a variation of the effective index of refraction ac ...
... The cloaking device is composed of a spatially varying density of sub-wavelength 50 nm diameter silicon posts embedded in an SiO2 medium, and the reflective surface consists of a distributed Bragg reflector (DBR). The distribution of posts induces a variation of the effective index of refraction ac ...
Lab 6 - College of San Mateo
... 6. Keeping the telescope fixed in position, rotate the prism table platform until light from the slit reflects from the OTHER side of the prism adjoining the apex angle A. As in the previous step, place the image precisely on the intersection of the crosshairs. Read THE SAME window as in the previou ...
... 6. Keeping the telescope fixed in position, rotate the prism table platform until light from the slit reflects from the OTHER side of the prism adjoining the apex angle A. As in the previous step, place the image precisely on the intersection of the crosshairs. Read THE SAME window as in the previou ...
University of Leicester Department of Physics and Astronomy
... In image formation a set of rays from a source point S travel along different paths to an image point P. By Fermat’s Principle ALL these paths (rays) MUST have the same optical path length. Or equivalently they contain the same number of wave cycles. If we follow the passage of a single wavefront f ...
... In image formation a set of rays from a source point S travel along different paths to an image point P. By Fermat’s Principle ALL these paths (rays) MUST have the same optical path length. Or equivalently they contain the same number of wave cycles. If we follow the passage of a single wavefront f ...
GLAST Proposal Review
... • Plastic Scintillator - used in all previous gamma-ray telescopes OSO-3, SAS-2, COS-B, CGRO (all 4 instruments), plus many cosmic ray experiments. • Waveshifting fibers - used in GLAST LAT Balloon Flight Engineering Model (BFEM). Waveshifting bars used by HEXTE on RXTE (same material in a different ...
... • Plastic Scintillator - used in all previous gamma-ray telescopes OSO-3, SAS-2, COS-B, CGRO (all 4 instruments), plus many cosmic ray experiments. • Waveshifting fibers - used in GLAST LAT Balloon Flight Engineering Model (BFEM). Waveshifting bars used by HEXTE on RXTE (same material in a different ...
laser optical disk set
... 5.6 The Adjustable Mirror—Plane mirror The adjustable mirror contains a flexible piece of polished metal supported by two plastic pillars at the ends. The pillars can rotate to force the mirror into a circular curve, and are fixed in the desired position by thumbscrews. Loosen the thumbscrews and ...
... 5.6 The Adjustable Mirror—Plane mirror The adjustable mirror contains a flexible piece of polished metal supported by two plastic pillars at the ends. The pillars can rotate to force the mirror into a circular curve, and are fixed in the desired position by thumbscrews. Loosen the thumbscrews and ...
Atmospheric Turbulence and its Influence on Adaptive Optics
... Tatarskii (1961) made the assumption that the variations in refractive index result directly in phase fluctuations described by φ(r), whereas any change in amplitude are due to second order effects acting on the already perturbed wavefront. This turns out to be a reasonable assumption as most models ...
... Tatarskii (1961) made the assumption that the variations in refractive index result directly in phase fluctuations described by φ(r), whereas any change in amplitude are due to second order effects acting on the already perturbed wavefront. This turns out to be a reasonable assumption as most models ...
Edwin Hubble
... • In other words: – he showed that galaxies are moving away from us with a speed proportional to their distance – Aka: the Universe is expanding ...
... • In other words: – he showed that galaxies are moving away from us with a speed proportional to their distance – Aka: the Universe is expanding ...
Comparative h- and m-indices for Fifteen Ground- and Space
... measure, the h‐index was used to provide a comparison of scientific productivity. For further information on how the h‐ index is calculated, refer to the original Hirsch publication (2005). To normalize the results for telescopes that have been in operation for varying lengths of time, the m‐index ...
... measure, the h‐index was used to provide a comparison of scientific productivity. For further information on how the h‐ index is calculated, refer to the original Hirsch publication (2005). To normalize the results for telescopes that have been in operation for varying lengths of time, the m‐index ...
Uses of lenses
... – Curvature of incoming light becomes important – Result: Lens does not behave as expected – Solution: Variable focal length ...
... – Curvature of incoming light becomes important – Result: Lens does not behave as expected – Solution: Variable focal length ...
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.