WOLFRAM|DEMONSTRATIONS PROJECT

Newtonian Telescope

​
focal parameter p
40
scale
1
mirror location
18
mirror size
1
rays
6
lens
0.7
aperture
4
lens width
1.5
labels
coordinates
parameters
F = 200 mm
f = 27 mm
D = 80 mm
Γ = F / f = 8
d = 15 mm
x
N
= 80
S = 4° 30'
E = F / D = 2.5
This Demonstration allows you to calculate the optimal characteristics for a Newtonian telescope, including mirror and lens parameters, and aperture width. The equation of a parabolic mirror is
2
y
=2px
, where
p
is the focal parameter. The focal distance is defined as
F=p/2
.