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{{Short description|Observable quantity in imaging astronomical interferometry}} ...orms the basis of the '''self-calibration''' approach to [[interferometric imaging]]. The observable which is usually used in most "closure phase" observation ...

...] than [[diffraction]] due to the telescope's small aperture. However, the imaging resolution of telescopes with apertures much larger than <math>r_0</math> ( ...elescopes| page=92|isbn=0-19-509019-5}}</ref> in terms of the so-called [[Astronomical seeing#The profile|atmospheric turbulence strength]] <math>C_n^2</math> (wh ...

...l-phases''' are observable quantities used in high resolution astronomical imaging used for [[superresolution]] image creation.<ref name="kpfizeau">Martinache ...rror in the pupil plane is small enough (i.e. when the Strehl ratio of the imaging system is sufficiently high), the complex amplitude associated to the instr ...

...o reconstruct these structures on the stellar surface is called '''Doppler-imaging''', often based on the [[Principle of maximum entropy|maximum entropy]] ima Doppler imaging was first used to map chemical peculiarities on the surface of [[Ap and Bp ...

* [[Astronomical seeing]] [[Category:Astronomical imaging]] ...

...mers to define the star size in an astronomical image. Mainly due to the [[astronomical seeing|seeing]], stars are not imaged as a dot but spread out like a Gaussi [[Category:Astronomical imaging]] ...

{{Short description|Fluorescence imaging technology}} ...e=October 2021 |title=High-resolution structural and functional deep brain imaging using adaptive optics three-photon microscopy |journal=Nature Methods |lang ...

'''Afocal photography''', also called '''afocal imaging''' or '''afocal projection''' is a method of [[photography]] where the [[ca ...le telescopes and microscopes. Afocal photographic setups work because the imaging device's eyepiece produces [[collimated]] light and with the camera's lens ...

| discovery_method = [[imaging method]] ...]] discovered in the year 2021 using the [[Methods of detecting exoplanets|imaging method]]. BD+60 1417b is the only known [[exoplanet]] in the system BD+60 1 ...

{{Short description|Astronomical observatory for studying the cosmic microwave background (2008–2010)}} ...ckground radiation]].<ref name="quiet_homepage" /> QUIET stands for '''Q/U Imaging ExperimenT'''. The Q/U in the name refers to the ability of the telescope t ...

| discovery_method = [[Methods of detecting exoplanets#Direct imaging|Direct imaging]] ...te=8 August 2022 |website=nameexoworlds.iau.org |publisher=[[International Astronomical Union|IAU]] |access-date=27 August 2022}}</ref> The approved names, propose ...

...eading role in many of the largest Hubble Space Telescope and ground based imaging surveys, including the [[Hubble Deep Field]] and [[Great Observatories Orig .../ref> and was part of the [[UKIDSS]] survey in the UK that won the [[Royal Astronomical Society]]'s 2012 Group Achievement Award. ...

...round seven times that of [[Jupiter]].<ref name=Feng2024/> It was [[direct imaging|directly imaged]] using the [[James Webb Space Telescope]] in 2023<ref name ...y]], was published by Fabo Feng et al. in ''[[Monthly Notices of the Royal Astronomical Society]]''. This study found a semi-major axis of about 11.6 AU, an orbita ...

| discovery_method = [[Direct imaging]] ...R 2562. Discovered in 2016 by a team led by Quinn M. Konopacky by [[direct imaging]], HR 2562 B orbits within the inner edge of HR 2562's [[circumstellar disc ...

...|title=A large arc in the gravitational lens system 0957 + 561|journal=The Astronomical Journal|volume=105|year=1993|pages=816|issn=0004-6256|doi=10.1086/116474|bi ...title=The population of galaxy-galaxy strong lenses in forthcoming optical imaging surveys|journal=The Astrophysical Journal|volume=811|issue=1|year=2015|page ...

...(the so-called "[[interferometric visibility|visibility]] function") of an astronomical object, a radio astronomer can thereby reconstruct the source's brightness ...ces. The most important assumptions of the theorem and their relevance to astronomical sources are discussed here. ...

...the [[orbital inclination]]. It has been repeatedly resolved by [[Speckle imaging|speckle interferometery]] since 1973. Radio emission was detected from this | publisher=Strasbourg astronomical Data Center |access-date=15 October 2022}}</ref> ...

...-D113"/> Sheppard was able to detect this faint moon through the [[Speckle imaging#Shift-and-add method|shift-and-add technique]], in which he took many long- ...arent magnitude]] of 26.7, so it could only be observed with long-exposure imaging by large-[[aperture]] telescopes like the Magellan Telescope.<ref name="She ...

...6}} Holman's team was able to detect this faint moon through the [[Speckle imaging#Shift-and-add method|shift-and-add technique]], in which they took many lon ...arent magnitude]] of 25.9, so it could only be observed with long-exposure imaging by large-[[aperture]] telescopes like the Subaru Telescope.<ref name="Shepp ...

...e likelihood of visibility will be related to the [[Signal-to-noise ratio (imaging)|signal to noise ratio]]. Imagine that the only noise is the variability of ...hreshold and astronomical visibility |journal=Monthly Notices of the Royal Astronomical Society |volume=442 |issue=3 |pages=2600–2619|doi=10.1093/mnras/stu992 |doi ...