Certi interventi sono contrari allo spirito di un forum: sono qui anche per imparare non solo per dire quello che so ai neofiti
Ho sbagliato a dire che TEC è l'ultimo arrivato rispetto Takahashi? Allora informatevi voi...
About Telescope Engineering Company
--------------------------------------------------------------------------------
Telescope Engineering Company began in 1994 as a distributor/subcontractor of optics and optical materials. Our primary products in the beginning were: zero-expansion Sitall blanks from LZOS, large mirrors and optical systems from LOMO and opticts for Maksutov telescopes made in Kiev (Ukraine).
We were successful in all of these products and totally brought over to the USA eight systems over 1 meter size. Seven 1-meter systems were installed on Mt. Wilson - a multi-array interferometer project for the search of planets near the closest stars. A few more large Cassegrain systems from 1m to 1.4m were made for Japanese subcontractors and the largest, a 1.4m Cassegrain system, ended up in an observatory in South Africa.
In the late 90's we came to decision for starting our own production of optics and telescopes, at that time we brought to the USA a complete line of equipment for testing glass and optical manufacturing. In the 1998 we started production of optics in Golden, Colorado. We were producing a line of Maksutov telescopes ranging from 6" to 10" diameter and continue to work on special optics for professional observatories. In the beginning of the new century we began working on a new product - Apochromatic refractors,
the first APO was made in the year 2000 ( APO200FL) and in 2002 we have started regular production of smaller refractors. The first production model of refractors was the APO140 F7 ED oiled triplet - which was a good choice for introduction to the market; later on we added larger models: APO160, APO180 and APO200. Apochromatic refractors make up the majority of our ongoing present and near future production.
About Takahashi
Takahashi began manufacturing telescopes in 1967 their 35th year of business. They began and remain in the sand casting business today.
Their first model was TS-65 a 65mm x 900mm achromat. By 1969 they produced their first 65mm triplet semi-apochromat and 100mm f/10 reflector in 1969.
The TS80 built in April of 1972 was the first triplet apochromat Takahashi telescope built. Then in 1973 their first fluorite triplet telescope was used too photograph the total solar eclipse on June 29th of that year in Africa. It was an 80mm x 1200mm and in the same year they produced their first equatorial mount with a polar telescope.
In 1977 Takahashi introduced their second triplet fluorite apochromat the TS-90 a 90mm x 1000mm and the 90S mount and the famous JP mount in 1979. The NJP mount as it is called today is still in production. The JP and NJP mounts can be converted to Takahashi’s Temma “go to” system. This is a testament to its timeless design. Then followed by the introduction of famous Sky Patrol portable mount in 1981, this mount was a favorite for eclipse chasers. It features a polar alignment telescope in the R.A. shaft and integral 40mm guide scope. In that year the fluorite Series FC 65, 78, 100, and 125 were introduced. This series remained in production until 1994.
Takahashi developed the camera angle adjuster which is a bearing device that allows the camera or ocular to be rotated 360° without loss of focus. This rotator device is still used today for all Takahashi focuser from the 2” to 4” focusers and all astrographs.
From this time Takahashi used a compression ring ocular holder to provide precise centering of the ocular and optics of the telescope.
In 1983 introduced their Epsilon Series of Hyperbolic flat field astrographs with the 130, 160, 200, 250 and 300. Takahashi was able to perfect the process for grinding hyperbolic mirrors and is doing so today for its current Epsilons and corrected RC astrographs. This was also the year they introduced the prototype FCT-150 fluorite triplet apochromat and the revolutionary EM-2000 mount which used electric clutches and had a direct read out of R.A. and Dec. This mount could be transported to remote sites because it broke down into three parts.
In 1985 the triplet FCT Series included a 65, 76, 100, 125 and 150mm fluorite triplets. The Mewlon Series Dall-Kirkham Cassegrain telescopes were the next series in sizes of 180, 210, 250 and 300mm were developed along with the CN-212, a convertible 212mm classical Cassegrain f/12 and corrected Newtonian convertible telescope.
In 1989 Takahashi introduced their famous TSC-225: a 225mm Schmidt-Cassegrain with innovations such as 10 baffles in the baffle tube and a rear cell fan for cooling of the optics. The 225 used white German optical glass for its corrector plate. Ever the innovator Takahashi produced the carbon fiber Epsilon-250 in 1992 closely followed by the carbon fiber Epsilon-210 hyperbolic astrographs.
Takahashi also makes observatory telescopes which include: 350mm hyperbolic astrographs, 300 and 400mm Cassegrains, 200, 250 and 300mm triplet apochromatic refractors and the large EM-3500 mounts to carry them.
Takahashi’s manufacture of refractors, Newtonian reflectors, Cassegrain/Newtonians, classical Cassegrains, hyperbolic astrographs, corrected Baker RC astrographs, mounts and oculars makes it one of the most versatile companies of its type in the world.
The current line of Ortho Apochromatic refractors use a design that is absolutely color free, will include a 110mm, 130mm [currently produced], 150mm [introduced 06/05] and a 180mm. Coming also is a line of Ortho Astrographs.