Editing Subaru Telescope (section)

== Instruments ==
[[File:The Keck Subaru and Infrared obervatories.JPG|thumb|The Subaru alongside the twin [[W. M. Keck Observatory]] telescopes and the [[Infrared Telescope Facility]]]]

Several cameras and spectrographs can be mounted at Subaru Telescope's four focal points for observations in visible and infrared wavelengths.

; Multi-Object Infrared Camera and Spectrograph (MOIRCS) : Wide-field camera and spectrograph with the ability to take spectra of multiple objects simultaneously, mounts at the Cassegrain focus.
; Infrared Camera and Spectrograph (IRCS) : Used in conjunction with the new 188-element adaptive optics unit (AO188), mounted at the infrared Nasmyth focus.
; Cooled Mid Infrared Camera and Spectrometer (COMICS) : Mid-infrared camera and spectrometer with the ability to study cool interstellar dust, mounts on the Cassegrain focus.  Decommissioned in 2020.<ref>{{cite web |url=https://subarutelescope.org/jp/news/topics/2020/08/19/2892.html |lang=Japanese |script-title=ja:冷却中間赤外線分光撮像装置 COMICS の「ファイナルライト」 |date=October 26, 2022 |access-date=December 20, 2022 |archive-date=December 20, 2022 |archive-url=https://web.archive.org/web/20221220085853/https://subarutelescope.org/jp/news/topics/2020/08/19/2892.html |url-status=live }}</ref>
; Faint Object Camera And Spectrograph (FOCAS) : Visible-light camera and spectrograph with the ability to take spectra of up to 100 objects simultaneously, mounts on the Cassegrain focus.
; Subaru Prime Focus Camera (Suprime-Cam) : 80-megapixel wide-field visible-light camera, mounts at the prime focus. Superseded by the Hyper Suprime-Cam in 2012, decommissioned in May 2017.
; High Dispersion Spectrograph (HDS) : Visible-light spectrograph mounted at the optical Nasmyth focus.
; Fiber Multi Object Spectrograph ([[FMOS]]) : Infrared spectrograph using movable fiber optics to take spectra of up to 400 objects simultaneously. Mounts at the prime focus.
; High-Contrast Coronographic Imager for Adaptive Optics (HiCIAO) : Infrared camera for hunting planets around other stars. Used with AO188, mounted at the infrared Nasmyth focus.

[[File:HSCSDMmap2018.gif|thumb|[[Dark matter]] map from 2018 by the Hyper Suprime-Cam survey<ref>{{Cite journal|last1=Hikage|first1=Chiaki|last2=Oguri|first2=Masamune|last3=Hamana|first3=Takashi|last4=More|first4=Surhud|last5=Mandelbaum|first5=Rachel|last6=Takada|first6=Masahiro|last7=Köhlinger|first7=Fabian|last8=Miyatake|first8=Hironao|last9=Nishizawa|first9=Atsushi J|last10=Aihara|first10=Hiroaki|last11=Armstrong|first11=Robert|date=April 1, 2019|title=Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam first-year data|url=https://academic.oup.com/pasj/article/doi/10.1093/pasj/psz010/5370019|journal=Publications of the Astronomical Society of Japan|language=en|volume=71|issue=2|pages=43|arxiv=1809.09148|doi=10.1093/pasj/psz010|issn=0004-6264|archive-date=November 25, 2021|access-date=November 26, 2021|archive-url=https://web.archive.org/web/20211125194844/https://academic.oup.com/pasj/article/doi/10.1093/pasj/psz010/5370019|url-status=live}}</ref><ref>{{Cite web|last=University|first=Carnegie Mellon|date=September 26, 2018|title=Hyper Suprime-Cam Survey Maps Dark Matter in the Universe - News - Carnegie Mellon University|url=http://www.cmu.edu/news/stories/archives/2018/october/dark-matter-survey.html|website=www.cmu.edu|language=en|access-date=November 26, 2021|archive-date=September 7, 2020|archive-url=https://web.archive.org/web/20200907194216/https://www.cmu.edu/news/stories/archives/2018/october/dark-matter-survey.html|url-status=live}}</ref>]]

; Hyper Suprime-Cam (HSC) : This 900-megapixel ultra-wide-field (1.5° field of view) camera saw first light in 2012, and was offered for open-use in 2014.<ref>{{cite web |url=http://subarutelescope.org/Observing/Instruments/HSC/index.html |title=HSC |publisher=Subaru Telescope, NAOJ |access-date=December 27, 2013 |archive-date=September 11, 2013 |archive-url=https://web.archive.org/web/20130911223431/http://subarutelescope.org/Observing/Instruments/HSC/index.html |url-status=live }}</ref> The extremely large wide-field correction optics (a seven-element lens with some elements up to a meter in diameter) was manufactured by Canon and delivered March 29, 2011.<ref>{{cite web | url=http://sumire.ipmu.jp/en/1648 | title=Subaru Telescope HSC Wide Field Corrector completed | access-date=January 1, 2012 | archive-date=April 26, 2012 | archive-url=https://web.archive.org/web/20120426084000/http://sumire.ipmu.jp/en/1648 | url-status=live }}</ref>  It will be used for surveys of weak lensing to determine dark matter distribution.<ref>{{Cite journal | doi = 10.1117/2.3201407.17| title = Satoshi Miyazaki plenary: Hyper Suprime-Cam for Weak Gravitational Lensing Survey| journal = SPIE Newsroom| year = 2014 | last1 = Spie}}</ref>
; Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) : The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument is a high-contrast imaging system for [[Direct imaging|directly imaging]] exoplanets.<ref>[http://www.naoj.org/Projects/SCEXAO SCExAO website]</ref> The [[coronagraph]] uses a [[Phase Induced Amplitude Apodization]] (PIAA) design which means it will be able to image planets closer to their stars than conventional [[Lyot type coronagraph]] designs. For example, at a distance of 100 pc, the PIAA coronagraph on SCExAO would be able to image from 4 AU outwards while [[Gemini Planet Imager]] and [[VLT-SPHERE]] from 12 AU outwards.<ref>Jovanovic, N., Martinache, F., Guyon, O., Clergeon, C., Singh, G., Kudo, T., Vievard, S., Newman, K., Minowa, Y., Hayano, Y., Kuhn, J., Serabyn, E., Norris, B., Tuthill, P., Stewart, P., Huby, E., Perrin, G., Lacour, S., Murakami, N., Fumika, O., 2014, [http://www.naoj.org/Projects/SCEXAO/06publis/06publis.html "SCExAO as a precursor to an ELT exoplanet direct imaging instrument"] {{webarchive|url=https://web.archive.org/web/20140408221433/http://www.naoj.org/Projects/SCEXAO/06publis/06publis.html |date=April 8, 2014 }},</ref> The system also has several other types of coronagraph: [[Vortex coronagraph|Vortex]], Four-Quadrant Phase Mask and 8-Octant Phase Mask versions, and a shaped pupil coronagraph.<ref>{{cite web|title=Overview|url=http://www.naoj.org/Projects/SCEXAO/index.html|website=SCExAO: The Subaru Coronagraphic Extreme AO Project|access-date=August 21, 2014|archive-date=September 30, 2014|archive-url=https://web.archive.org/web/20140930210045/http://www.naoj.org/Projects/SCEXAO/index.html|url-status=live}}</ref> The phase I of construction is complete<ref>[http://www.naoj.org/Projects/SCEXAO/02current_capabilities/02current_capabilities.html SCExAO Science ready Capabilities] {{webarchive|url=https://web.archive.org/web/20140408215613/http://www.naoj.org/Projects/SCEXAO/02current_capabilities/02current_capabilities.html |date=April 8, 2014 }}</ref> and phase II construction to be complete by end of 2014<ref>[http://www.naoj.org/Projects/SCEXAO/03future_capabilities/03future_capabilities.html SCExAO Future Capabilities] {{webarchive|url=https://web.archive.org/web/20140408214909/http://www.naoj.org/Projects/SCEXAO/03future_capabilities/03future_capabilities.html |date=April 8, 2014 }}</ref> for science operations in 2015. SCExAO will initially use the HiCIAO camera but this will be replaced by CHARIS,<ref>{{Cite book|title=Techniques and Instrumentation for Detection of Exoplanets VI|journal=Proceedings of SPIE |volume=8864|pages=88641N|arxiv=1309.3586|author1=Mary Anne Peters-Limbach|last2= Groff|first2=Tyler D.|last3= Jeremy Kasdin|first3=N.|last4=Driscoll|first4=Dave|last5=Galvin|first5=Michael|last6=Foster|first6=Allen|last7= Carr|first7=Michael A.|last8=LeClerc|first8=Dave|last9=Fagan|first9=Rad|last10= McElwain|first10=Michael W.|last11=Knapp|first11=Gillian|last12=Brandt|first12=Timothy|last13=Janson|first13=Markus|last14=Guyon|first14=Olivier|last15=Jovanovic|first15=Nemanja|last16=Martinache|first16=Frantz|last17=Hayashi|first17=Masahiko|last18=Takato|first18=Naruhisa|chapter=The optical design of CHARIS: An exoplanet IFS for the Subaru telescope |editor1-first=Stuart |editor1-last=Shaklan |year=2013|bibcode = 2013SPIE.8864E..1NP |doi = 10.1117/12.2024070 |s2cid=108283811 }}</ref> an integral field spectrograph, around 2016.