Qualla: Crossley telescope https://qualla.com/crossley-telescope en-us © 2026 Bendyline Mon, 20 Jul 2026 10:21:10 GMT Qualla serial false Qualla support@bendyline.com yes https://qualla.com/_m/9/q/9/k/crossley-telescope-wp/hero-small.webp Qualla: Crossley telescope https://qualla.com/crossley-telescope Crossley telescope: Introduction https://qualla.com/crossley-telescope/ Photo credit Thomson200, CC0. The Crossley telescope at Lick Observatory has lived two lives on two continents. Built in Halifax, England, by Andrew Ainslie Common and purchased by Edward Crossley, the 36-inch reflecting telescope crossed the Atlantic in 1895 as a donation to the mountaintop observatory above San Jose. In the hands of Lick astronomers, the Crossley became one of the most productive instruments in the history of observational astronomy, producing photographs of nebulae and galaxies that transformed understanding of the universe's structure.

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Image: Thomson200 | CC0

]]> Wed, 01 Apr 2026 00:00:00 GMT https://qualla.com/_m/9/q/9/k/crossley-telescope-wp/9q9k-crossley-telescope-intro.mp3 0:06 1 full Crossley telescope: An English Telescope in California https://qualla.com/crossley-telescope/ Photo credit Michael from San Jose, California, USA, CC BY 2.0. Edward Crossley was a wealthy English politician and amateur astronomer who had purchased the 36-inch reflector from its builder. Finding the English weather unsuitable for serious observational work, Crossley donated the telescope to Lick Observatory, where the clear skies above...

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Image: Michael from San Jose, California, USA | CC BY 2.0

]]> Wed, 01 Apr 2026 00:00:00 GMT https://qualla.com/_m/9/q/9/k/crossley-telescope-wp/9q9k-crossley-telescope-an-english-telescope-in-california.mp3 0:06 2 full Crossley telescope: Keeler's Revelation https://qualla.com/crossley-telescope/ Photo credit Gatohaus at English Wikipedia, Public domain. Keeler's photographs with the Crossley telescope, published around 1900, showed that spiral nebulae were far more common than anyone had suspected. At the time, astronomers debated whether these spirals were gas clouds within our own galaxy or separate galaxies entirely. The Cros...

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Image: Gatohaus at English Wikipedia | Public domain

]]> Wed, 01 Apr 2026 00:00:00 GMT https://qualla.com/_m/9/q/9/k/crossley-telescope-wp/9q9k-crossley-telescope-keelers-revelation.mp3 0:06 3 full Crossley telescope: Still Watching https://qualla.com/crossley-telescope/ Photo credit Gatohaus at English Wikipedia, Public domain. The Crossley telescope remains in operation at Lick Observatory, though its role has evolved from frontier instrument to educational and research tool. Modern detectors have replaced the glass photographic plates that Keeler used, but the telescope's 36-inch mirror still gathers ...

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Image: Gatohaus at English Wikipedia | Public domain

]]> Wed, 01 Apr 2026 00:00:00 GMT https://qualla.com/_m/9/q/9/k/crossley-telescope-wp/9q9k-crossley-telescope-still-watching.mp3 0:06 4 full