Lecture 11 Flashcards
1
Q
The Bandpass of a spectrometer is
A
the minimum wavelength resolution, achieved by matching the effects of diffraction to the dispersion of the grating
2
Q
A Cassegrain Reflector uses
A
a parabolic primary and a hyperbolic secondary
these are called Conic sections
3
Q
A mirror is optimised in Ray Tracing
Software by
A
varying the Conic Parameter
4
Q
The Hubble Space Telescope had a flawed mirror resulting in
A
Spherical Aberration
5
Q
Hubble space telescope flawed mirror was fixed using
A
Corrective Optics were fitted during the first servicing mission
6
Q
Bandpass Derivation
A
Δx(i) = λF/(Na cos θi)
=> Δx(i) = mF/(a cos θi) x λ/Nm
dx/dλ = mF/(a cos θi)
R = λ/Δλ = Nm
Thus
Δx(i) = dx/dλ Δλ
