RFO Yard Sale Inventory – as of May 29, 2013
... We also have two neglected optical test benches, one wood and one metal. They are somewhat buried in their current location, so it is difficult to access their exact size and condition. My best estimate is that they are about one foot wide and between six and eight feet long. Each is supported on a ...
... We also have two neglected optical test benches, one wood and one metal. They are somewhat buried in their current location, so it is difficult to access their exact size and condition. My best estimate is that they are about one foot wide and between six and eight feet long. Each is supported on a ...
optics - einstein classes
... As focal-length of a spherical mirror f (= R/2) depends only on the radius of mirror and is independent of wavelength of light and refreactive index of medium. Hence the focal length of a spherical mirror in air or water and for red or blue light is same. This is also why the image formed by mirrors ...
... As focal-length of a spherical mirror f (= R/2) depends only on the radius of mirror and is independent of wavelength of light and refreactive index of medium. Hence the focal length of a spherical mirror in air or water and for red or blue light is same. This is also why the image formed by mirrors ...
Lecture 3 PPT - Lick Observatory
... • Angle that the “chief ray” from an object can subtend, given the pupil (entrance aperture) of the imaging system • Recall that the chief ray propagates through the lens undeviated ...
... • Angle that the “chief ray” from an object can subtend, given the pupil (entrance aperture) of the imaging system • Recall that the chief ray propagates through the lens undeviated ...
Bioptic telescopes - The College of Optometrists
... to interested patients that the device is evident and will make them obvious in public, the individual has reasonable expectations at the trial. Prices of bioptic telescopes can range from approximately £600 to £2000. As it is not funded through the National Health Service, cost may be a factor. Bio ...
... to interested patients that the device is evident and will make them obvious in public, the individual has reasonable expectations at the trial. Prices of bioptic telescopes can range from approximately £600 to £2000. As it is not funded through the National Health Service, cost may be a factor. Bio ...
Overview of various methods for measuring a lens focal length
... The lens power is measured for different positions of the source. The author of this method claims that routinely measurements are made with less than 0.5% accuracy. ...
... The lens power is measured for different positions of the source. The author of this method claims that routinely measurements are made with less than 0.5% accuracy. ...
orion® starBlast™ 4.5 EQ
... Do You Wear Eyeglasses? If you wear eyeglasses, you may be able to keep them on while you observe. In order to do this, your eyepiece must have enough “eye relief” to allow you to see the entire field of view with glasses on. You can try this by looking through the eyepiece first with your glasses ...
... Do You Wear Eyeglasses? If you wear eyeglasses, you may be able to keep them on while you observe. In order to do this, your eyepiece must have enough “eye relief” to allow you to see the entire field of view with glasses on. You can try this by looking through the eyepiece first with your glasses ...
Location of Cardinal Points from the ABCD Matrix for the General
... First Focal Plane: The first focal plane is in the left hand space of the optical system, which by our convention corresponds to the object space of the imaging system. The intersection of the first focal plane with the optical axis is the first focal point F1. Rays originating from this point will ...
... First Focal Plane: The first focal plane is in the left hand space of the optical system, which by our convention corresponds to the object space of the imaging system. The intersection of the first focal plane with the optical axis is the first focal point F1. Rays originating from this point will ...
Transformation-designed optical elements
... The transformation method allows one to design continuous media that exert precise and arbitrary control over a field, particularly the electromagnetic field[1][2][3][4]. Even the challenging problem of reflectionless design in arbitrary geometries is quite straight foward. The resulting material sp ...
... The transformation method allows one to design continuous media that exert precise and arbitrary control over a field, particularly the electromagnetic field[1][2][3][4]. Even the challenging problem of reflectionless design in arbitrary geometries is quite straight foward. The resulting material sp ...
handout - Computer Ease
... the path Many are familiar with collimation issues in telescopes. All types of telescopes need to be collimated. Some are done once, by the manufacturer at the factory, and never need to be touched again; other types, perhaps they need to be checked and changed before each use. Collimation is the pr ...
... the path Many are familiar with collimation issues in telescopes. All types of telescopes need to be collimated. Some are done once, by the manufacturer at the factory, and never need to be touched again; other types, perhaps they need to be checked and changed before each use. Collimation is the pr ...
chromospheric telescope of baikal astrophysical observatory. new light
... components, positive and negative, making them from one material and with radii of curvature that are equal in size but different in sign. The latter is very favorable for the mutual control of radii of curvature and lens surface shape when manufactured. The lens reconstructs and enlarges a solar im ...
... components, positive and negative, making them from one material and with radii of curvature that are equal in size but different in sign. The latter is very favorable for the mutual control of radii of curvature and lens surface shape when manufactured. The lens reconstructs and enlarges a solar im ...
Atmospheric Turbulence and its Influence on Adaptive Optics
... will use it, the feasibility of the AO system at the telescope, the atmospheric conditions at the telescope site, and the budget available. In this lecture I wish to address the atmospheric parameters that need to be considered when deciding on an AO system and describe which AO systems are best sui ...
... will use it, the feasibility of the AO system at the telescope, the atmospheric conditions at the telescope site, and the budget available. In this lecture I wish to address the atmospheric parameters that need to be considered when deciding on an AO system and describe which AO systems are best sui ...
Single Slit Diffraction and Resolution
... the size of the objective, d. Also UV is absorbed by glass. Electrons can be used because of their wave properties (E = h f) ...
... the size of the objective, d. Also UV is absorbed by glass. Electrons can be used because of their wave properties (E = h f) ...
Overview of Technologies for Direct Optical Imaging of Exoplanets
... External occulters achieve their starlight suppression by casting a shadow at telescope aperture. The shadow properties and depth of contrast are defined by the Fresnel propagation of a mathematically optimized apodization function which can be approximated using a star-shape form for manufacturing. ...
... External occulters achieve their starlight suppression by casting a shadow at telescope aperture. The shadow properties and depth of contrast are defined by the Fresnel propagation of a mathematically optimized apodization function which can be approximated using a star-shape form for manufacturing. ...
6671-09_stacie_hvisc - LOFT, Large Optics Fabrication and
... combined determine the observed image quality of a distant star ...
... combined determine the observed image quality of a distant star ...
Appendix: Support manual for prism spectrometer
... objective and the Ramsden type eye-piece. The eye-piece is fitted with cross-wires and slides in a tube which carries the cross-wires. The tube carrying the cross wires in turn, slides in another tube which carries the objective. The distance between the objective and the cross-wires can be adjusted ...
... objective and the Ramsden type eye-piece. The eye-piece is fitted with cross-wires and slides in a tube which carries the cross-wires. The tube carrying the cross wires in turn, slides in another tube which carries the objective. The distance between the objective and the cross-wires can be adjusted ...
Activity 15
... stars made of? What are the faint, cloudlike nebulae? What are the conditions on the Sun’s surface? Still, few professional astronomers admitted the potential of the new technologies. The turning point came in the 1890s when celestial photographers began to discover objects in space that were too fa ...
... stars made of? What are the faint, cloudlike nebulae? What are the conditions on the Sun’s surface? Still, few professional astronomers admitted the potential of the new technologies. The turning point came in the 1890s when celestial photographers began to discover objects in space that were too fa ...
Collimating Orion StarMax and Apex Maksutov
... Collimating Eyepiece will aid greatly in keeping your eye centered and is strongly recommend. ...
... Collimating Eyepiece will aid greatly in keeping your eye centered and is strongly recommend. ...
Optical telescope
An optical telescope is a telescope that gathers and focuses light, mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct view, or to make a photograph, or to collect data through electronic image sensors.There are three primary types of optical telescope: refractors, which use lenses (dioptrics) reflectors, which use mirrors (catoptrics) catadioptric telescopes, which combine lenses and mirrorsA telescope's light gathering power and ability to resolve small detail is directly related to the diameter (or aperture) of its objective (the primary lens or mirror that collects and focuses the light). The larger the objective, the more light the telescope collects and the finer detail it resolves.People use telescopes and binoculars for activities such as observational astronomy, ornithology, pilotage and reconnaissance, and watching sports or performance arts.