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Astronomical instrument Measurement instrument Further reading Lewis, M. J. T. (2001-04-23). Surveying Instruments of Greece and Rome.Cambridge University Press. This page was last edited on 15 March 2022, at 13:09 (UTC). Text is available under the Creative Commons Attribution-ShareAlike License 3.0; additional terms may apply.
Gauge Precision Instruments (originally Gauge, Inc.)  is a U.S.-based designer and importer of audio electronics and accessories for professional and consumer markets. The company was founded by Chandler R. Bridges, Jr. and Robert C. Chiarelli in Beverly Hills, CA in 2008.  Gauge Precision Instruments' most prevalent product categories ...
Footnotes / references.  Nova Ltd. (formerly Nova Measuring Instruments) is a publicly traded company, headquartered in Israel, a provider of metrology devices for advanced process control used in semiconductor manufacturing. Shares of the company are traded on the NASDAQ Global Market and on the Tel Aviv Stock Exchange .
- Coordinate System
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Where the standard CMM uses a three dimensional Cartesian X, Y, Z system where each axis is orthogonal to the other, a Cylindrical Coordinate Measuring Machine omits the X or Y axis. The probe moves in only two axes (the vertical Z and either X or Y horizontal) and the rotating table positions the subject of inspection (a cylindrical part, hence th...
The CCMM coordinate system differs from standard cartesian coordinates in that it employs a rotating table. For this reason, a spherical coordinate system is employed to define the axis. A complete definition can be found here:[circular reference]The cylindrical coordinate system allows for the construction of crankshaft gages, transmission shaft g...
Where the standard CMM is suitable for prismatic parts, the Cylindrical CMM is ideally suited for cylindrical parts. Examples include camshafts, crankshafts, transmission shafts and other rotating parts with a length longer than their diameter. Parts with a length less than the diameter are typically measured on a roundness gauge.
The method for recording the angular position of the part will always make use of an optical encoder. However, the radial measurement probe may incorporate an optical technology, or tactile technology. Optical technologies include non-contact laser interferometry or shadow systems, while tactile systems use an optical grating.
Standards similar to those used for a standard CMM, also verify the performance of the CCMM. The ISO 10360 series defines the characteristics of the probing system and the length measurement error: 1. PForm: probing deviation when measuring the form of a sphere 2. PSize: probing deviation when measuring the size of a sphere 3. EUni: deviation of me...
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In 2016, NASA began considering four different space telescope concepts for future Large Strategic Science Missions. They are the Habitable Exoplanet Imaging Mission (HabEx), Large Ultraviolet Optical Infrared Surveyor (LUVOIR), Lynx X-ray Observatory (lynx), and Origins Space Telescope (OST). In 2019, the four teams turned in their final reports t...
LUVOIR's main goals are to investigate exoplanets, cosmic origins, and the Solar System. LUVOIR would be able to analyze the structure and composition of exoplanet atmospheres and surfaces. It could also detect biosignatures arising from life in the atmosphere of a distant exoplanet. Atmospheric biosignatures of interest include CO2, CO, molecular ...
LUVOIR would be equipped with an internal coronagraph instrument, called ECLIPS for Extreme Coronagraph for LIving Planetary Systems, to enable direct observations of Earth-like exoplanets. An external starshadeis also an option for the smaller LUVOIR design (LUVOIR-B). Other candidate science instruments studied are: High-Definition Imager (HDI), ...Large UV/Optical/IR Surveyor at the Goddard Space Flight CenterAdvanced Technology Large-Aperture Space Telescope at STScI
Not to be confused with SAR interferometry. An astronomical interferometer or telescope array is a set of separate telescopes, mirror segments, or radio telescope antennas that work together as a single telescope to provide higher resolution images of astronomical objects such as stars, nebulas and galaxies by means of interferometry.
The World Geodetic System ( WGS) is a standard for use in cartography, geodesy, and satellite navigation including GPS. This standard includes the definition of the coordinate system 's fundamental and derived constants, the normal gravity Earth Gravitational Model (EGM), a description of the associated World Magnetic Model (WMM), and a current ...