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Figure 1
Fig.1
THE FUNDAMENTAL SYSTEM OF THE
SCHIEFSPIEGLER
THE CASSERAINIAN
Symbols
Primary
radiusy1
focal lengthf1
radius of curvaturer1
Secondary
radius of the incoming
light-cone		y2
focal lengthf2
radius of curvaturer2
separation of mirrorse
residual cone of lightp
cutting lengthp'
distance: center of
primary - second focus		b
equivalent focal lengthF
Fundamental formulae
Amplifying Ratio
A = F over f'
Residual cone
p = (f sub 1 + b) over (A + 1)
Separation of mirrors
e = f sub 1 - p
Cutting length
p prime = e + b
R.o.c of the secondary
r sub 2 = (2 times p prime times p) over (p prime - p)
Radius of the incoming cone
on the secondary
y sub 2 = (y sub 1 times p) over f sub 1

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