Karl Fritsch (optician)
Karl Fritsch (born August 22, 1855 in Vienna ; † January 2, 1926 there ) was an Austrian optician and instrument maker.
Together with J. Forster, in 1876/77 he constructed a new type of astronomical reflector telescope in which the main and secondary mirror were tilted against each other. He called the instrument, whose advantages were lower diffraction , no obstruction and shorter overall length, at first "eccentric Cassegrain telescope ". In his own publication he named it Brachy Telescope (later generally abbreviated as Brachyt) and built it with the help of an optical company in Vienna.
The Brachyt von Fritsch / Forster suggested 60 years on the two Germans Anton jams and Anton Kutter to an improved " Schiefspiegler to construct" and improve in the 1950s. Since the technique of mirror grinding had meanwhile reached wide circles of amateur astronomers , the Schiefspiegler - albeit in the Kutterian form - slowly gained acceptance as a long-focal mirror telescope.
Literature and web links
- Fritsch Karl. In: Austrian Biographical Lexicon 1815–1950 (ÖBL). Volume 1, Verlag der Österreichischen Akademie der Wissenschaften, Vienna 1957, p. 371.
- Karl Fritsch: The Brachy Telescope: Invented and constructed by J. Forster and K. Fritsch. For friends of astronomy, the military, tourists etc. written by K. Fritsch. Vienna 1877 (according to Lower Saxony University Library)
- The "Brachy" Telescope, Schiefspiegler Homepage
- Schiefspiegler History (Fritsch 1876 to Kutter 1975)
| personal data | |
|---|---|
| SURNAME | Fritsch, Karl |
| BRIEF DESCRIPTION | Austrian optician |
| DATE OF BIRTH | August 22, 1855 |
| PLACE OF BIRTH | Vienna |
| DATE OF DEATH | January 2, 1926 |
| Place of death | Vienna |