Meudon Great Refractor
Meudon Great Refractor (i.e. the Grande Lunette) is a double telescope with lenses (83 cm + 62 cm), in Meudon, France. It is a twin refracting telescope built in 1891, with one visual and one photographic tube together on a equatorial mount, inside a dome. The Refractor was built for Meudon Observatory, and is the largest doublet refracting telescope in Europe, but about the same size of several telescope in his period when this style of telescope was popular. Other large telescope in a similar type include the James Lick telescope (91.4), Potsdam Great Refractor (80+50 cm), and the Greenwich 28 inch refractor (71.1 cm).
Institutionally it was part of the Meudon Observatory, which later became integtated with Paris Observatory; in modern times the Medeon locations is on e of the branches of Paris observatory.
The great refractor was used for research well into the 1980s, after nearly a century of use.[1] In the 21st century was renovated and re-opened for public outreach.[1]
Design
There is two objective lens, one is designed for the human eye, and the other for photography.[2] The 62 cm lens is designed to focus blue light, which is the color desired for the film emulsion.[3] (It would be another century before CCD imaging came into force)
The Meudon refractor resides in Grande Cupola
The Meudon telescope was typical of this period, missing become the largest refractor because of the Lick Observatory telescope coming online in 1888, and there were even bigger such as the Yerkes Observatory telescope, inaugurated in 1897.[4]
Observations
In 1910 Anotaldi was able to disprove is own theory of Martian canali by viewing through the great refractor.[5] A trifecta of observational factors synergize; viewing through the third largest refractor in the World, Mars was at opposition, and exceptional clear weather.[5] The canali dissolved before Antaldi's eyes into various "spots and blotches" on the surface of Mars.[5]
See also
- ^ a b "2008JHA....39..131C Page 131". adsabs.harvard.edu. Retrieved 2019-11-16.
- ^ "2008JHA....39..131C Page 131". adsabs.harvard.edu. Retrieved 2019-11-16.
- ^ "2008JHA....39..131C Page 131". adsabs.harvard.edu. Retrieved 2019-11-16.
- ^ "2008JHA....39..131C Page 131". adsabs.harvard.edu. Retrieved 2019-11-16.
- ^ a b c Dicati, Renato (2013-06-18). Stamping Through Astronomy. Springer Science & Business Media. ISBN 9788847028296.