1
Session 26: Ra
y Optics
–
Optical In
s
trumen
ts
•
R
ecap
•
Opti
cal Ins
tru
ments
•
Microscopes
•
Simple
•
Compound
•
T
elescopes
•
Astr
onomical
•
T
err
estrial
•
Galilean
•
Cassegr
ain’
s
