7.22 Example — Tel 2M Pupila
============================

PDF section 7.22. Source script: ``KrakenOS/Examples/Examp_Tel_2M_Pupila.py``.

Wraps the 2 m telescope in :doc:`../pupilcalc_tool` to read the pupil
parameters of a Cassegrain-type design — a setup that involves the
negative thicknesses of mirror returns that the manual flags in
:doc:`../working_with_library`.

.. figure:: ../../_static/manual/examples/22_tel2m_pupila_a.png
   :align: center
   :alt: 2 m telescope pupil (view 1)

   Figure 29a. Entrance/exit-pupil geometry.

.. figure:: ../../_static/manual/examples/22_tel2m_pupila_b.png
   :align: center
   :alt: 2 m telescope pupil (view 2)

   Figure 29b. Ray fan through the telescope.

.. literalinclude:: ../../../../KrakenOS/Examples/Examp_Tel_2M_Pupila.py
   :language: python