8/14/2019 Isaac Newton's First Telescope - Hand-made Replica of the Original

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Newton's first telescope replica

This extraordinary hand-made replica telescope is a

faithful, fully-functioning reproduction of Newton's

famous reflecting telescope presented to the Royal

Society in London in 1672.

Fully functioning The replica is not just a a display

piece - it is fully functional and its single element

eyepiece will produce a magnification sufficient to

reveal the craters on our Moon and the four moons

of Jupiter - under ideal conditions - as well as

terrestrial details.

17th-century technology The replica telescope

features near identical construction methods when

compared to the original. The replica features a

hand-ground and figured soft-metal main mirror and

hand-turned woodwork for the base, pedestal and

mounting ball. The brass and other metals used in

the construction have all been hand-fettled and

painstakingly assembled using the same methods

available to Newton in the 17th century.

Click the link below to see a video presentation of

this unique replica telescope:

Video demo of the Astro Engineering replica of

Sir Isaac Newton's original telescope

Made in England The telescope is made entirely in

England with all raw materials selected from within

the British Isles - the woods used in the replica, for

example, were all grown in Britain.

Important features of the replica Firstly, this is anauthentic replica and not merely a toy telescope,

unlike the wildly over-marketed Vixen offering. The

AE replica is designed to provide the look and

optical performance of the 17th-century original. The

optical system is fully functional and gives views, the

creators believe, that would be very close to the

original. It will be noted that the replica has a much

cleaner, brighter appearance compared to the

original (follow the link below to see a picture of the

original telescope). This difference in appearance is

hardly surprising; the original is over 330 years old!

The replica will probably look a bit dark and worm-

eaten by the year 2340 as well! The creators

decided to make the telescope, as near as possible,

resemble the look of the instrument as it was

presented to the Royal Society in London in the year

1672. The brass plate on the replica (see pictures)

carries the same text as the original held by the

Royal Society (with the added declaration in smallprint that the telescope is a replica and lists the

names of the creators). The brass plate also

faithfully records the bizarre spelling found in the text

of the original ('INUENTED BI' instead of INVENTED

BY).

The brass and other metal components of the

telescope are deliberately unlacquered and will

tarnish over time (so that the telescope develops a

natural time-worn patina, much like the original).

The only concession to the effects of time is the

modern silicon coatings on the optical components.

The optical components in the original quickly

deteriorated due to natural tarnishing (and were then

fatally destroyed by cleaning!). The replica's optical

components have been over-coated to ensure that

the telescope enjoys a lifetime of function. The

functionality of the metal work closely follows the

original, and the telescope strips down in a way

identical to the original (see video link under pictures

- left). The wooden ball is not just a beautiful

example of hand-made craftsmanship - it is also

very convenient and functional - and works exactly

like the original - just like all the other features of the

replica.

A museum quali ty replica Based on technical

monographs and a detailed photographic study of

the original, the Newton's reflecting telescope replica

is a detailed reproduction that has striven to capture

as much authentic detail as feasible.

The replica includes a detailed printed article that

covers some of the history of the original and the

steps taken, and construction methods used, by the

creation team to produce the replica.

Hand-made by expertsThe replica is manufactured

by Astro Engineering, and is a rare departure from

their normal activity as designers and manufacturers

of telescope accessories. The replica was conceived

and designed by Robert J Dalby, founder of Astro

Engineering, and the vital all-metal primary mirror

was hand-ground and brought to its final figure by

optician Terry Pierce. The woodwork was hand-

turned by James Munson, a life-long wood-working

expert (Mr Munson and his craftsmanship featured in

Country Life magazine in their 'Living National

Treasure' series in 1997).

Very limited production Each replica is individually

numbered and signed by the designer Robert Dalby.So far less than twenty replicas have been

manufactured, and because of the manufacturing

difficulties the total production run is not expected to

run beyond 50 replica telescopes.

Click the link below to read more about the replica

by its creator Robert J Dalby:

Replica of Newton's reflecting telescope

This telescope, though fully functioning as describedabove, is intended a display piece and, just like the

original of 1672, is not designed for extensive use.

The images produced by this small telescope are

very poor by today's standard; the replica should be

enjoyed as an ornamental conversation piece

illustrating 400 years of the telescope and the

timeless genius of the world's greatest scientist, Sir

Issac Newton.

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