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antique telescopes (13)

Harris & Son Newton telescope

Finally the Harris & Son Newton telescope arrived from the UK. Thomas Harris was active in London between 1780 and 1817. The telescope and the mount in bad condition. Lot's of original parts are missing. When I bought the scope the mirror was perfect. When it arrived is broken. Big loss. But it's a historical interesting instruments who deserves to be restored. It will take a lot of time. No hurry. Still have enough other telescopes who need my attention

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Secretan, box with 7 telescope eyepieces 1950's

Secretan was one of the finest opticians of France.  This a rare box with 6 astronomical and 1 terrestrial eyepiece.

The astronomical eyepices can be used in combination with modern telescopes.

Tested the eyepeices with a modern refractor and they perform exceptionally.  I suppose this are orthoscopic eyepieces.…

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Mirrors made by Prof. Emile Schaer

Two telescope mirrors made the famous Suisse optician and astronomer Prof. Emile Schaer (1862 - 1931).
The two mirrors are part of heliostat.
The two mirrors are described in "Publications of the Observatoire Geneve Series A, vol. 18, pp.253-265" 1931.
The diameter are 26cm (625cm) and 20cm (300cm).
Emile Schaer is know for the invention of the folded refractor.
The mirrors are signed

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Our service

We have been selling vintage astronomical instruments for over more than 10 years.
I'm a amateur astronomer myself and all instruments I sell are in good working condition.
I test all the telescopes under the stars and know the possibilities of each instrument
All the instruments are controlled and cleaned before shipping.
The necessary reparations are done.
If possible missing parts are replaced.
If not, read the item description carefully for possible…

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