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Coordinates: 34°52′19″N 116°50′03″W / 34.87187°N 116.83419°W / 34.87187; -116.83419 (C.A.C.T.U.S.)
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{{about|a telescope in California|the plant|cactus|other uses|Cactus (disambiguation)}}

{{Infobox Observatory
{{Infobox Observatory
|name = C.A.C.T.U.S.
|name = CACTUS
|image = [[File:Fish eye Solar Two.jpg|250px]]
|image =
|caption = Solar II collector (prior to Observatory use)
|caption = Solar II collector (prior to Observatory use)
|organization = [[University of California, Davis]]
|organization = [[University of California, Davis]]
|location = [[Daggett, California|Daggett]], [[California]], [[United States|USA]]
|location = [[Daggett, California]], US
|coords = {{coord|34.87187|N|116.83419|W|display=inline}}
|coords = {{coord|34.87187|N|116.83419|W|display=inline}}
|altitude = {{convert|610|m|ft}}
|altitude = {{convert|610|m|ft}}
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|established = 2001-2004
|established = 2001-2004
|closed = 2005
|closed = 2005
⚫
|telescope1_name = Solar 2 ACT
|website = [http://ucdcms.ucdavis.edu/solar2/index.php C.A.C.T.U.S. University of California at Davis]
⚫
|telescope1_name =
|telescope1_type = [[Čerenkov radiation|Čerenkov]] [[air shower (physics)|air shower]]
|telescope1_type = [[Čerenkov radiation|Čerenkov]] [[air shower (physics)|air shower]]
}}
}}


'''C.A.C.T.U.S.''' (Converted Atmospheric Cherenkov Telescope Using Solar-2) is a ground based [[Air shower (physics)|Air Cherenkov Telescope]] (ACT) located at [[Daggett, California]], near [[Barstow, California|Barstow]]. It was originally a solar power plant called [[Solar Two]], but was converted to an observatory starting in 2001. The first astronomical observations started in the fall of 2004. However, the facility had its last observing runs in November 2005 as funds for observational operations from the [[National Science Foundation]] were no longer available.<ref>{{cite web|url=http://ucdcms.ucdavis.edu/solar2/history.php|title=C.A.C.T.U.S. University of California at Davis|accessdate=2009-02-20}}</ref> The facility is owned by the [[University of California, Davis]].
'''CACTUS''' (Converted Atmospheric Cherenkov Telescope Using Solar-2) was a ground-based, [[Air shower (physics)|Air Cherenkov Telescope]] (ACT) located outside [[Daggett, California]], near [[Barstow, California|Barstow]]. It was originally a solar power plant called [[Solar Two]], but was converted to an observatory starting in 2001. The first astronomical observations started in the fall of 2004. However, the facility had its last observing runs in November 2005 as funds for observational operations from the [[National Science Foundation]] were no longer available.<ref>{{cite web|url=http://ucdcms.ucdavis.edu/solar2/history.php |title=History of Solar Two |accessdate=2009-02-20 |url-status=dead |archiveurl=https://web.archive.org/web/20080703165605/http://ucdcms.ucdavis.edu/solar2/history.php |archivedate=July 3, 2008 }}</ref> The facility was operated by the [[University of California, Davis]] but owned by [[Southern California Edison]].<ref name="clui">{{cite web
|url=http://ludb.clui.org/ex/i/CA4989/
|title=Solar Two Experimental Solar Facility
|accessdate=2009-05-29
|archive-url=https://web.archive.org/web/20090515110355/http://ludb.clui.org/ex/i/CA4989
|archive-date=2009-05-15
|url-status=dead
}}</ref>
It was demolished in 2009.<ref>[http://www.desertdispatch.com/news/bang-7374-daggett-going.html Going out with a bang | bang, daggett, going - Top Story - Desert Dispatch] {{webarchive|url=https://web.archive.org/web/20120218183756/http://www.desertdispatch.com/news/bang-7374-daggett-going.html |date=2012-02-18 }}</ref>

[[File:CACTUS Observatory tower.jpg|thumb|The central observation tower of the CACTUS observatory]]
[[File:CACTUS Observatory tower in Mirrors.jpg|thumb|The main CACTUS observatory tower, as reflected in mirrors.]]


== See also ==
== See also ==
* [[Air shower (physics)]]
* [[Air shower (physics)]]
* [[Čerenkov radiation]]
* [[Čerenkov radiation]]
* [[Gamma-ray astronomy]] - provides some history of high energy astronomy, but [[gamma ray]]s are not charged particle [[Čerenkov radiation]] producers as observed at C.A.C.T.U.S.
* [[Gamma-ray astronomy]] - provides some history of high energy astronomy.
* [[IACT]]
* [[The Solar Project]] - the physical facility that preceded C.A.C.T.U.S. in Daggett.
* [[The Solar Project]] - the physical facility that preceded C.A.C.T.U.S. in Daggett.
* [[STACEE]]
* [[Ultra-high-energy cosmic ray]]
* [[Ultra-high-energy cosmic ray]]


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== External links ==
== External links ==


* [https://www.youtube.com/watch?v=g0QaJBW0X2g Solar One Power Tower Demolition]
* [http://ucdcms.ucdavis.edu/solar2/index.php UC Davis Official Website]
* [http://maps.google.com/maps?hl=en&ie=UTF8&ll=34.872306,-116.833785&spn=0.007623,0.014377&t=k&z=16&om=1 Google Satellite Image]
* [https://maps.google.com/maps?hl=en&ie=UTF8&ll=34.872306,-116.833785&spn=0.007623,0.014377&t=k&z=16&om=1 Google Satellite Image]
* The observatory is located at {{coord|34.87187|N|116.83419|W|type:landmark|display=title,inline|name=C.A.C.T.U.S.}}
* The former power plant/observatory is located at {{coord|34.87187|N|116.83419|W|type:landmark|display=inline,title|name=C.A.C.T.U.S.}}


[[Category:San Bernardino County, California]]
[[Category:Buildings and structures in San Bernardino County, California]]
[[Category:High energy particle telescopes]]
[[Category:High energy particle telescopes]]
[[Category:Gamma-ray telescopes]]

{{astronomy-stub}}
{{observatory-stub}}

Latest revision as of 02:21, 8 June 2022

This article is about a telescope in California. For the plant, see cactus. For other uses, see Cactus (disambiguation).
CACTUS
OrganizationUniversity of California, Davis
LocationDaggett, California, US
Coordinates34°52′19″N 116°50′03″W / 34.87187°N 116.83419°W / 34.87187; -116.83419
Altitude610 metres (2,000 ft)
Established2001-2004
Closed2005
Telescopes
Solar 2 ACTČerenkov air shower
CACTUS is located in the United States
CACTUS
Location of CACTUS
[edit on Wikidata]

CACTUS (Converted Atmospheric Cherenkov Telescope Using Solar-2) was a ground-based, Air Cherenkov Telescope (ACT) located outside Daggett, California, near Barstow. It was originally a solar power plant called Solar Two, but was converted to an observatory starting in 2001. The first astronomical observations started in the fall of 2004. However, the facility had its last observing runs in November 2005 as funds for observational operations from the National Science Foundation were no longer available.[1] The facility was operated by the University of California, Davis but owned by Southern California Edison.[2] It was demolished in 2009.[3]

The central observation tower of the CACTUS observatory
The main CACTUS observatory tower, as reflected in mirrors.

See also

[edit]

References

[edit]
  1. ^ "History of Solar Two". Archived from the original on July 3, 2008. Retrieved 2009-02-20.
  2. ^ "Solar Two Experimental Solar Facility". Archived from the original on 2009-05-15. Retrieved 2009-05-29.
  3. ^ Going out with a bang | bang, daggett, going - Top Story - Desert Dispatch Archived 2012-02-18 at the Wayback Machine
[edit]
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