Hereford Arizona Observatory

Coordinates: 31°27′08″N 110°14′16″W / 31.4522°N 110.2378°W / 31.4522; -110.2378
From Wikipedia, the free encyclopedia

Hereford Arizona Observatory
Hereford Arizona Observatory (HAO)
HAO#1 and HAO#2.
  • Bruce L. Gary Edit this on Wikidata
Observatory code G95 Edit this on Wikidata
Coordinates31°27′08″N 110°14′16″W / 31.4522°N 110.2378°W / 31.4522; -110.2378
Altitude4,670 ft (1,420 m) Edit this at Wikidata Edit this at Wikidata
Commercial telescopes
Hereford Arizona Observatory is located in the United States
Hereford Arizona Observatory
Location of Hereford Arizona Observatory
  Related media on Commons

Hereford Arizona Observatory (HAO), IAU-code G95, is an astronomical observatory,[1][2] owned and operated by amateur astronomer Bruce L. Gary.[3] Observational studies of unusual starlight fluctuations in Tabby's Star (KIC 8462852)[4] and WD 1145+017[5] are recent interests.

HAO consists of two telescopes, in two separate observatory installations: HAO#1 (contains a Celestron CPC 1100, 11-inch Schmidt-Cassegrain telescope on an equatorial mount) and HAO#2 (contains an Astro-Tech Ritchey–Chrétien, 16-inch telescope on an equatorial mount).[1]

The observatory is located in Arizona about 130 km (80 mi) southeast of Tucson and about 11 km (7 mi) north of the Mexican border. Coordinates are at the following: North Latitude +31:27:08 and West Longitude 110:14:16, at an altitude of 1,423 m (4,670 ft).[1]

HAO#2 lit by a full moon with Venus setting behind mountains at 2,900 m (9,500 ft) altitude.


See also[edit]


  1. ^ a b c Gary, Bruce L. (17 May 2017). "Hereford Arizona Observatory (HAO)". Retrieved 22 September 2017.
  2. ^ Staff (2017). "List Of Observatory Codes". Minor Planet Center. Retrieved 22 September 2017.
  3. ^ Gary, Bruce L. (12 August 2017). "Bruce L. Gary - Resume". Retrieved 22 September 2017.
  4. ^ Gary, Bruce L. (16 September 2017). "Hereford Arizona Observatory photometry observations of KIC 8462852 between 2 May and 16 September 2017". Archived from the original on 17 September 2017. Retrieved 17 September 2017.
  5. ^ Rappaport, S.; Gary, B.L.; Vanderburg, A.; Xu, S.; Pooley, D.; Mukai, K. (2018). "WD 1145+017: Optical Activity During 2016-2017 and Limits on the X-Ray Flux". Monthly Notices of the Royal Astronomical Society. 474 (1): 933–946. arXiv:1709.08195. Bibcode:2018MNRAS.474..933R. doi:10.1093/mnras/stx2663.

External links[edit]