1. Telescopes

2. 1608 – Earliest Patent for Telescope
Hans Lippershey of Middelburg, in the Netherlands, applied for a patent

3. Earlier Telescope Users
Leanord & Thomas Diggs s
1571 Son publishes book
“…by proportionall glasses duely situate in convenient angles, not onely discovered things farre off …”

4. Earlier Telescope Users
Thomas Harriot
Earliest drawing of moon – August 1609
Unpublished papers

5. Galileo October / November 1609 observes moon & Jupiter’s moons
Venus & Sunspots

6. Isaac Newton

7. Let's Explore!
Convex Or
Converging
Concave Or
Diverging

8. ??? Why does a Concave or Diverging Lens Shrink Images?
Why does a Convex or Converging Lens magnify images?
Why are objects upside down in a telescope?

9. Why does a Concave or Diverging Lens Shrink Images?

10. Why does a Convex or Converging Lens magnify images?

11. Why are objects upside down in a telescope?

12. How do lenses & mirrors work in a telescope?

13. Refracting Telescopes

14. Reflecting Telescope

15. ??? Why does a Concave or Diverging Lens Shrink Images?
Why does a Convex or Converging Lens magnify images?
Why are objects upside down in a telescope?