The Hartness Mansion
The Hartness Observatory
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Hartness' interest in astronomy and flight adds another
dimension to a colorful personality. On the front
lawn to the left of our entrance can be seen the Hartness
Equatorial Turret Telescope, built in 1910. It was one of the
first tracking telescopes in America. In 1908, Hartness began
designing his telescope. Hartness designed what is known as a
coude (elbow) telescope. In this system, the light is bent 90
degrees to the eyepiece by a prism at the base of the telescope
tube. It is this design which allows the observer the comfort
of a heated room and puts the telescope tube outside and away from the warm
air. John
A. Brashear supplied Hartness with the optics for his telescope. The
object lens is 10-inches in diameter, magnifies images 600 times
and has a 150-inch focal length. To build a tracking telescope,
Hartness pointed the middle of his turret (dome) at the North
Star, creating a polar axis. The turret rotates along the same angle as the
plane of the equator. This east- to-west movement of the turret
counteracts the west-to-east rotation of the earth and gives
the telescope the illusion of tracking a star; actually, it is the earth which
is moving not the star. Inside the observatory, a one-half horsepower electric motor activates the drive shaft. The drive shaft turns the gears which move the three and one-half ton turret along the equatorial plane. Movement along this plane is called right ascension and is measured in hours of time on a sidereal click. A sidereal day is the length of time it takes a star to return to the same position in the sky. The telescope tube points, or declinates, north and south of the equator. This enable the observer to focus on any celestial object that can be seen in full on a clear night. eing
an intense man, who disliked interruptions and noise,
Hartness decided to build an underground tunnel leading
to an apartment and climate controlled workrooms from which to operate
the telescope. Today these rooms comprise a museum
for the Stellafane Society (formerly the Springfield Telescope Makers,
(STM) a group of amateur telescope makers) founded by Russell Porter,
a Hartness friend and fellow telescope aficionado. It
was Porter and other Springfield men with the encouragement
of Hartness, who initiated the creation and construction of the Hale
200-inch telescope on Mt. Palomar.
The underground museum is a fitting place to view the 200-inch telescope's
conceptual drawings and other mementos of these special
men.
James Hartness and Charles Lindbergh
he
house contains not only the memorabilia of a prominent man,
a renaissance man and a former Governor, but the memoirs
of the family's daily life written by granddaughter Mary Fenn, a
copy of which is placed in each guest room. Her imagery makes
the past come alive - "The atmosphere exuded a friendly, hospitable warmth
- a reflection of the lady of the house." |
James Hartness on the
Lindbergh Day Receiving Stand with Charles
Lindbergh |
Vermont Historical Museum - Hartness-Porter Astronomy Museum at the Hartness House
The Hartness House is home to the James Hartness-Russell Porter Amateur Astronomy Museum in cooperation with Stellafane featuring important amateur astronomy works and telescopes, and the antique 1910 Hartness Equatorial Tracking Telescope and Observatory. Stellafane's Virtual Museum of the James Hartness-Russell Porter Amateur Astronomy Museum collection at the Hartness House can be viewed here. Many historic astronomy exhibits and works of arts are housed here.
In addition, the Hartness House offers a unique underground museum and an antique 1910 Brashear telescope and observatory. Museum tours can be arranged by appointment. The museum collection offers interesting exhibits including Hale Observatory in Mount Palomar drawings, Porter Garden Telescope, Hartness sundial, 1917 Fullam 10" reflector telescope, and photographs of the early Hartness House.