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Hereford Arizona Observatory (HAO), IAU-code G95, is an
astronomical observatory An observatory is a location used for observing terrestrial, marine, or celestial events. Astronomy, climatology/meteorology, geophysics, oceanography and volcanology are examples of disciplines for which observatories have been constructed. Th ...
, owned and operated by amateur astronomer Bruce L. Gary. Observational studies of unusual starlight fluctuations in
Tabby's Star Tabby's Star (designated as KIC 8462852 in the Kepler Input Catalog and also known by the names Boyajian's Star and WTF (Where'sTheFlux?) Star, is a binary star in the constellation Cygnus approximately from Earth. The system is compo ...
(KIC 8462852) and
WD 1145+017 WD 1145+017 (also known as EPIC 201563164) is a white dwarf approximately from Earth in the constellation of Virgo. It is the first white dwarf to be observed with a transiting minor planet orbiting it. Stellar characteristics The w ...
are recent interests. HAO consists of two
telescope A telescope is a device used to observe distant objects by their emission, Absorption (electromagnetic radiation), absorption, or Reflection (physics), reflection of electromagnetic radiation. Originally, it was an optical instrument using len ...
s, in two separate observatory installations: HAO#1 (contains a Celestron CPC 1100, 11-inch Schmidt-Cassegrain telescope on an
equatorial mount An equatorial mount is a mount for instruments that compensates for Earth's rotation by having one rotational axis, called ''polar axis'', parallel to the Earth's axis of rotation. This type of mount is used for astronomical telescope mount, tel ...
) and HAO#2 (contains an Astro-Tech Ritchey–Chrétien, 16-inch telescope on an equatorial mount). The observatory is located in
Arizona Arizona is a U.S. state, state in the Southwestern United States, Southwestern region of the United States, sharing the Four Corners region of the western United States with Colorado, New Mexico, and Utah. It also borders Nevada to the nort ...
about southeast of
Tucson Tucson (; ; ) is a city in Pima County, Arizona, United States, and its county seat. It is the second-most populous city in Arizona, behind Phoenix, Arizona, Phoenix, with a population of 542,630 in the 2020 United States census. The Tucson ...
and about north of the
Mexican border Mexico shares international borders with three nations: *To the north the United States–Mexico border, which extends for a length of through the states of Baja California, Sonora, Chihuahua, Coahuila, Nuevo León and Tamaulipas. *To the sou ...
. Coordinates are at the following: North Latitude +31:27:08 and West Longitude 110:14:16, at an altitude of .


Gallery

File:HerefordArizonaObservatory-HAO-1-C11-BruceGary-20091201.jpg, HAO#1 − Celestron 11-inch CPC-1100 telescope File:HerefordArizonaObservatory-HAO-SouthernHorizonNotated-BruceGary.jpg, HAO view of the southern horizon − mountains are at 4.0 deg elevation on the
meridian Meridian or a meridian line (from Latin ''meridies'' via Old French ''meridiane'', meaning “midday”) may refer to Science * Meridian (astronomy), imaginary circle in a plane perpendicular to the planes of the celestial equator and horizon * ...
(vertical red line) − star
Canopus Canopus is the brightest star in the southern constellation of Carina (constellation), Carina and the list of brightest stars, second-brightest star in the night sky. It is also Bayer designation, designated α Carinae, which is Rom ...
(declination -52.7 deg) is transiting. File:HerefordArizonaObservatory-HAO-ControlRoom-BruceGary-20100206.jpg, HAO control room − the Celestron-11 telescope is managed by a dedicated computer on the left; the Meade-14 by one on the right.


See also

*
List of astronomical observatories This is a partial list of astronomical observatories ordered by name, along with initial dates of operation (where an accurate date is available) and location. The list also includes a final year of operation for many observatories that are no lon ...
*
List of observatory codes This is a list of observatory codes (IAU codes or MPC codes) published by the Minor Planet Center. For a detailed description, ''see observations of small Solar System bodies''. List References {{DEFAULTSORT:Observato ...
*
Tabby's Star Tabby's Star (designated as KIC 8462852 in the Kepler Input Catalog and also known by the names Boyajian's Star and WTF (Where'sTheFlux?) Star, is a binary star in the constellation Cygnus approximately from Earth. The system is compo ...
(
KIC 8462852 Tabby's Star (designated as KIC 8462852 in the Kepler Input Catalog and also known by the names Boyajian's Star and WTF (Where'sTheFlux?) Star, is a binary star in the constellation Cygnus approximately from Earth. The system is compo ...
) − oddly dimming star *
WD 1145+017 WD 1145+017 (also known as EPIC 201563164) is a white dwarf approximately from Earth in the constellation of Virgo. It is the first white dwarf to be observed with a transiting minor planet orbiting it. Stellar characteristics The w ...
- star destroying
planetesimal Planetesimals () are solid objects thought to exist in protoplanetary disks and debris disks. Believed to have formed in the Solar System about 4.6 billion years ago, they aid study of its formation. Formation A widely accepted theory of pla ...
, producing a dusty disk


References


External links


Official HAO WebSite



Bruce L. Gary (GoogleScholar)



Hereford Arizona Observatory (NatureIndex)

NASA Asteroid and Comet Watch Site

Near Earth Asteroid Tracking (NEAT)
{{Portal bar, Arizona, Stars, Spaceflight, Outer space, Education, Science Astronomical observatories in Arizona Buildings and structures in Cochise County, Arizona Discoverers of comets Solar System