Comparison table :
| Astronomical telescope | Galilean telescope |
| 1:In an astronomical telescope the eye piece is a convex lens. | 1:In Galilean telescope the eye piece is concave lens. |
| 2:It forms an inverted image. | 2:It forms an erect image. |
| 3:The length of astronomical telescope is: L =f0 + fe | 3:The length of Galilean telescope is: L =f0 – fe |
