![Drawing showing the lenses inside Kepler's telescope. 1878. Johannes Kepler (1571–1630), German astronomer and mathematician Stock Photo - Alamy Drawing showing the lenses inside Kepler's telescope. 1878. Johannes Kepler (1571–1630), German astronomer and mathematician Stock Photo - Alamy](https://c8.alamy.com/comp/RJAEE1/drawing-showing-the-lenses-inside-keplers-telescope-1878-johannes-kepler-15711630-german-astronomer-and-mathematician-RJAEE1.jpg)
Drawing showing the lenses inside Kepler's telescope. 1878. Johannes Kepler (1571–1630), German astronomer and mathematician Stock Photo - Alamy
![Engraving depicting a refracting telescope on an iron stand and fitted with a finder. The instrument has two double convex lenses and is known as the astronomical telescope. Dated 19th Century Stock Engraving depicting a refracting telescope on an iron stand and fitted with a finder. The instrument has two double convex lenses and is known as the astronomical telescope. Dated 19th Century Stock](https://cdn.superstock.com/1746/Comp/1746-111344670.jpg)
Engraving depicting a refracting telescope on an iron stand and fitted with a finder. The instrument has two double convex lenses and is known as the astronomical telescope. Dated 19th Century Stock
![Engraving depicting the arrangement of lenses in Johannes Kepler's telescope. This had two double convex lenses and gave a wider field of view. Johannes Kepler (1571-1630) a German mathematician, astronomer, and astrologer. Engraving depicting the arrangement of lenses in Johannes Kepler's telescope. This had two double convex lenses and gave a wider field of view. Johannes Kepler (1571-1630) a German mathematician, astronomer, and astrologer.](https://c8.alamy.com/comp/KJ1MBB/engraving-depicting-the-arrangement-of-lenses-in-johannes-keplers-KJ1MBB.jpg)