equatorial


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equatorial

1. of, like, or existing at or near the equator
2. Astronomy of or referring to the celestial equator

Equatorial

 

a lens or mirror telescope on a parallactic, or equatorial, mounting (seeTELESCOPE MOUNTING). A clock mechanism rotates the telescope around a polar axis at a rate of one rotation per 24 sidereal hours, so that the celestial object being observed, which moves because of the apparent diurnal rotation of the celestial sphere, remains in the field of view of the telescope. Graduated circles with measuring devices are secured to the axes to direct the telescope at the celestial object according to its hour angle and declination and to enable the approximate determination of its coordinates. Auxiliary astronomical tubes mounted on the primary one, called the finder and the guide, are used to locate the necesssary object and to keep the instrument directed at it during photography.

Equatorials may be visual (equipped with an ocular that has a micrometer for differential measurements) or photographic (with plateholders). (SeeASTRONOMICAL INSTRUMENTS AND DEVICES.)

References in periodicals archive ?
Determined to showcase Africa's gas potential and promote intra-Africa cooperation, Equatorial Guinea's Minister of Mines and Hydrocarbons, H.E Gabriel Mbaga Obiang Lima, continues his tour of Africa to invite GECF and non-GECF nations to attend the 5th GECF Summit which will be hosted for the first time on the African continent.
The agreement was signed in Malabo, Equatorial Guinea by Yacoub Yousef Al Hosani, MoFAIC's assistant Minister for International Organisations Affairs, and Simeon Ayuno Asuno Angie, Minister of Foreign Affairs and Cooperation of Equatorial Guinea.
The visa waiver is in line with an agreement signed on Monday by the UAE and Equatorial Guinea, in Malabo, capital of the Central African country.
Energy Minister Parviz Shahbazov has met with a delegation led by Santiago Mba Eneme Nsuga, State Secretary of Mines and Hydrocarbons of Equatorial Guinea.
The agreements were signed by Foreign Affairs Minister Khemaies Jhinaoui and his Equatorial Guinean counterpart Simeon Oyono Esono Angue.
The President of the Republic of Equatorial Guinea delivered a speech in which he commended the efforts exerted by Dr.
Being the 160th Diplomatic Mission in India, the Embassy aims to position Equatorial Guinea as the leading trade and investment destination for Indian enterprises on African continent.
A sanction of Sh1million (10,000 USD) is imposed on the Equatorial Guinea FA and Equatorial Guinea's Team is disqualified from the TOTAL African Women's Cup of Nations 2018," part of the letter noted.
Equatorial Guinea was disqualified based on CAF statutes and regulations.
The Joint Venture Agreement, which resulted in the formation of Oilserv Equatorial Guinea S.L, was signed between Oilserv Limited and GEpetrol at the GEpetrol Tower in Equatorial Guinea capital City, Malabo.
Nouakchott, July 1 (SUNA)- President of the Republic, Field Marshal Omer Al-Bashir, met Sudan on the sidelines of the 31st summit of the African Union in Nouakchott, with President of Equatorial Guinea, Teodoro Obiang Nguema Mbasogo, and discussed progress of the political and economic relations between the two countries.