This is a hands-on book for the amateur who has always thought making a
refractor was too difficult to even consider. Since publication of
Albert Ingall's first volume of Amateur Telescope Making, amateurs,
using rudimentary tools, have made thousands of telescopes. In spite
of the superior image forming capability of the unobstructed refractor,
most of these instruments have used a parabolic mirror. There is a
general perception that making a lens is an almost insurmountable task
for an amateur. This is aided and abetted by the lack of literature on
the subject of lens making for amateurs.
With this book, you will learn that making a lens involves the same simple
practices and common tools involved in making a mirror. You will find there
is nothing mysterious or unique. Yes, there are more surfaces to finish,
but all are spherical.
The author adopts the role of coach and guides the
reader, step by step, through all aspects of making a doublet lens; from the
characteristics of glass, abrasives, and pitch to methods for mounting the
finished lens.
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