![Hevelius' Telescope. /Nthe Longest Telescope Of Johannes Hevelius. Engraving, 1670. Poster Print by Granger Collection - Item # VARGRC0044150 - Posterazzi Hevelius' Telescope. /Nthe Longest Telescope Of Johannes Hevelius. Engraving, 1670. Poster Print by Granger Collection - Item # VARGRC0044150 - Posterazzi](https://cdn11.bigcommerce.com/s-yzgoj/images/stencil/1280x1280/products/1551514/4343475/apiwpm8cg__84274.1626722287.jpg?c=2)
Hevelius' Telescope. /Nthe Longest Telescope Of Johannes Hevelius. Engraving, 1670. Poster Print by Granger Collection - Item # VARGRC0044150 - Posterazzi
![Royal Society Picture Library | Johannes Hevelius observing through telescope,Johannes Hevelius observing through telescope Royal Society Picture Library | Johannes Hevelius observing through telescope,Johannes Hevelius observing through telescope](https://pictures.royalsociety.org/assets/object_images/3/32/6233/v0_rsweb2.jpg)
Royal Society Picture Library | Johannes Hevelius observing through telescope,Johannes Hevelius observing through telescope
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history - How did Johannes Hevelius' long telescope work? Why all the round holes? - Astronomy Stack Exchange
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