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...where a beam angle implied by the [[Altazimuth mount|optical axis]] of the telescope is ''undone'' to keep its orientation aligned with some downstream optics. * splitting the position into components perpendicular and parallel to the front mirror ...

...aves like a homogeneous, but pixellated, window that can have very unusual optical properties (see the picture of the view through a METATOY). ...nd J. Courtial|title=Metamaterials for light rays: ray optics without wave-optical analog in the ray-optics limit|journal=New J. Phys.|volume=11 |issue=1|page ...

...ogen dioxide]]. Typical setups allow for detection limits corresponding to optical depths of 0.0001 along lightpaths of up to typically 15 km and thus al ...ifferent paths through the atmosphere and so determine the difference in [[optical depth]] between the two columns (Alternative a solar atlas can be employed, ...

{{Infobox telescope}} The '''Bamberg-Refraktor''' is a large telescope. The refracting telescope has an [[aperture]] of 320 millimetres, a [[focal length]] of five met ...

...ols of mercury were proposed (and eventually developed) as [[liquid-mirror telescope]]s. In the 20th century new technologies such as [[dye laser]]s and liquid ...dex.php |title=COST Action MP1205 Advances in Optofluidics: Integration of Optical Control and Photonics with Microfluidics<!-- Bot generated title --> |acces ...

==Components== ...e to the system makes the two stars fairly easily resolvable with a larger telescope. Possible stable planetary orbits in the [[Circumstellar habitable zone|hab ...

...m stacks of metal meshes and [[dielectric]]. They are used as part of an [[optical path]] to filter the incoming light to allow frequencies of interest to pas ...etal-mesh filters can also be designed for use at 45° to split an incoming optical signal into several observation paths, or for use as a polarizing [[half-wa ...

...ions was completed using the [[Dwingeloo Radio Observatory|Dwingeloo radio telescope]] in the [[Netherlands]]. From this survey, astronomers were able to detect ...ssions was completed using the [[Villa Elisa, La Plata|Villa Elisa]] radio telescope in [[Argentina]] from which yet more HVCs were discovered.<ref name="Wakker ...

{{Short description|Special glass type used for optical systems}} ...ittance]], [[thermal expansion]] and other parameters. Lenses produced for optical applications use a wide variety of materials, from [[silicon dioxide|silica ...

...axies is almost completely dark. However, a sufficiently sensitive [[radio telescope]] detects a faint background glow that is almost uniform and is not associa The launch of the [[IXPE]] telescope in late 2021 made polarization measurements in the 2–8 KeV band also a real ...

...)|Galileo]]'', for example, were designed with scan platforms for pointing optical instruments at their targets largely independently of spacecraft orientatio ...esaturation maneuvers. A different approach was used by the [[Hubble Space Telescope]], which had sensitive optics that could be contaminated by thruster exhaus ...

| series = Springer Series in Optical Sciences | journal = Journal of the Optical Society of America ...

...[NASA]] [[infrared|infrared-wavelength]] {{convert|40|cm|abbr=on}} [[space telescope]], a mission that lasted from December 2009 to February 2011; the discovery ...GMOS) at the [[Gemini Observatory|Gemini South telescope]], [[Chile]]. The components of the system were resolved with an angular distance of 1.5 [[Minute and se ...

...ten much larger. Correcting for the PSF requires building a model for the telescope for how it varies across the field. Stars in our own galaxy provide a dire ...ed by Roger Lynds of the [[National Optical Astronomy Observatory|National Optical Astronomy Observatories]] and Vahe Petrosian of [[Stanford University]] who ...

[[File:HD41742.png|thumb|left|A diagram of the visual components of the HD 41742/41700 system]] ...lpha Centauri]] AB and [[Proxima Centauri]]; such wide separations between components are relatively rare, at least for solar-type stars. ...

...seful distances for stars out to a few hundred parsecs. The [[Hubble Space Telescope]]'s [[Wide Field Camera 3]] has the potential to provide a precision of 20 ...parsec from Spatially Scanning the Wide Field Camera 3 on the Hubble Space Telescope ...

...ic redshift survey using the dedicated 2.5-metre wide-angle SDSS [[optical telescope]] at [[Apache Point Observatory]] in [[New Mexico]]. The goal of this five- The [[density parameter]], <math>\Omega\!</math>, of various components, <math>x</math>, of the universe can be expressed as ratios of the density ...

[[File:Hubble Peas Ed.jpg|thumb|Three Hubble Space Telescope pictures of Green Peas]] ...ay Have Just Spotted the Universe's First Galaxies – NASA's new JWST space telescope has revealed some cosmic surprises, including galaxies that might have asse ...

...:Proper motion.JPG|thumb|250px|Relation between proper motion and velocity components of an object. At emission, the object was at distance ''d'' from the Sun, a | work=Australia Telescope Outreach and Education ...

...ous Fast Radio Bursts From Outer Space |url=https://scitechdaily.com/chime-telescope-detects-more-than-500-mysterious-fast-radio-bursts-from-outer-space/ |date= ...l=https://www.scientificamerican.com/article/fast-the-worlds-largest-radio-telescope-zooms-in-on-a-furious-cosmic-source/ |date=13 October 2021 |work=[[Scientif ...