"Every astronomer, whether amateur or professional, knows full well the inconvenience of having to change the eyepieces of the telescope whenever a different magnification is necessary to separate a double star or to reveal more clearly some detail on the moon or planets. A revolving eyepiece turret can easily be constructed to relieve the observer of the task...
Many a lowly pyrex baking dish has been transformed into a telescope mirror, and now a second raid on the kitchenware solves the problem at the other end of the instrument, for the chief requirements for making such a turret as shown are two ordinary tin pie plates."
Read the rest of the story in the October 1933 issue
of Popular Science