Tags and keywords
The target snippet are:
The diagram also includes an embedded captioned figure:
Wikipedia: 'Light path in a Cassegrain telescope.'
Image author: Krishnavedala; Copyright licence: Creative Commons CC BY-SA 4.0
Any CassegrainReflector
is characterised by having a ConvexHyperbolicMirror
as its secondary
.
(Inadvertently, the model has ended up so far with a convention that only convex variants of mirrors have 'Convex' explicitly prefixed in the name.)
The ClassicCassegrainReflector
has a concave HoledParabolicMirror
as its primary
.
A RitcheyChrétienReflector
has a concave HoledHyperbolicMirror
as its primary
. We are told also:
It is beyond the scope of this trail to model coma and spherical aberration in detail, but they can be represented for now by the ValueTypes ComaMeasure
and SphericalAberrationMeasure
, used to type value properties in any OpticalTelescope
.