Similarities of astronomical telescope and a compound microscope

• consists of two convex lenses.
• The first image is real,inverted and acts as the object for the eyepiece.
• The eyepiece acts as a magnifying lens.(For an astronomical telescope in normal adjustment,the first image is at the common focal plane of the objective lens and the eyepiece.)
• The final image is virtual,invert and magnified.

 

Differences
Type of lens  

• Compound microscope:two high powered convex lenses
• Astronomical telescope:a low powered convex lens and a high powerted convex lens

First image

• Compound microscope:first image is magnified
• Astronomical telescope:first image is dimnished

Condition of the eye when using the instrument

• Compound microscope:ciliary muscles are at ease and the eye is relaxed
• Astronomical telescope:ciliary muscles are contracted.Eye is strained.