![Astronomy: a 40-foot telescope constructed by William Herschel, in use outdoors. Coloured etching, 18--. | Wellcome Collection Astronomy: a 40-foot telescope constructed by William Herschel, in use outdoors. Coloured etching, 18--. | Wellcome Collection](https://iiif.wellcomecollection.org/image/V0024766/full/full/0/default.jpg)
Astronomy: a 40-foot telescope constructed by William Herschel, in use outdoors. Coloured etching, 18--. | Wellcome Collection
![Herschel's 20-foot telescope on the grounds of his residence at Slough,... | Download Scientific Diagram Herschel's 20-foot telescope on the grounds of his residence at Slough,... | Download Scientific Diagram](https://www.researchgate.net/publication/312775484/figure/fig1/AS:593844458512390@1518594960713/Herschels-20-foot-telescope-on-the-grounds-of-his-residence-at-Slough-near-Windsor.png)
Herschel's 20-foot telescope on the grounds of his residence at Slough,... | Download Scientific Diagram
![STFC, NWO and IAC new operation agreement secures future of the William Herschel and Isaac Newton telescopes | EuropaWire.eu | The European Union's press release distribution & newswire service STFC, NWO and IAC new operation agreement secures future of the William Herschel and Isaac Newton telescopes | EuropaWire.eu | The European Union's press release distribution & newswire service](https://news.europawire.eu/wp-content/uploads/2017/02/STFC-NWO-and-IAC-new-operation-agreement-secures-future-of-the-William-Herschel-and-Isaac-Newton-telescopes.jpg)
STFC, NWO and IAC new operation agreement secures future of the William Herschel and Isaac Newton telescopes | EuropaWire.eu | The European Union's press release distribution & newswire service
![Sir William Herschel Great 40 foot telescope reflecting telescopes 1785 1789 Observatory House Slough England primary mirror Stock Photo - Alamy Sir William Herschel Great 40 foot telescope reflecting telescopes 1785 1789 Observatory House Slough England primary mirror Stock Photo - Alamy](https://c8.alamy.com/comp/C8NAJN/sir-william-herschel-great-40-foot-telescope-reflecting-telescopes-C8NAJN.jpg)