![A Mirror of the Past – Herschel and the James Webb Space Telescope – Bath Royal Literary and Scientific Institution A Mirror of the Past – Herschel and the James Webb Space Telescope – Bath Royal Literary and Scientific Institution](https://www.brlsi.org/wp-content/uploads/2021/12/HerschelNews.jpg)
A Mirror of the Past – Herschel and the James Webb Space Telescope – Bath Royal Literary and Scientific Institution
![William Herschel's 40 foot telescope, also known as the Great Forty Foot telescope, was a reflecting telescope constructed between 1785 and 1789 at Observatory House in Slough, England. It used a 47 William Herschel's 40 foot telescope, also known as the Great Forty Foot telescope, was a reflecting telescope constructed between 1785 and 1789 at Observatory House in Slough, England. It used a 47](https://c8.alamy.com/comp/T964MB/william-herschels-40-foot-telescope-also-known-as-the-great-forty-foot-telescope-was-a-reflecting-telescope-constructed-between-1785-and-1789-at-observatory-house-in-slough-england-it-used-a-47-inch-diameter-primary-mirror-with-a-1200-cm-focal-length-it-was-the-largest-telescope-in-the-world-for-50-years-it-may-have-been-used-to-discover-enceladus-and-mimas-the-6th-and-7th-moons-of-saturn-it-was-dismantled-in-1840-today-the-original-mirror-and-a-10-foot-section-of-the-tube-remain-T964MB.jpg)
William Herschel's 40 foot telescope, also known as the Great Forty Foot telescope, was a reflecting telescope constructed between 1785 and 1789 at Observatory House in Slough, England. It used a 47
Figure N°6-HERSCHEL Primary Reflector design-segments with or without I/F | Download Scientific Diagram
![William Herschel Telescope Mirror Being Polished by Royal Greenwich Observatory/science Photo Library William Herschel Telescope Mirror Being Polished by Royal Greenwich Observatory/science Photo Library](https://images.fineartamerica.com/images/artworkimages/mediumlarge/2/william-herschel-telescope-mirror-being-polished-royal-greenwich-observatoryscience-photo-library.jpg)