Sections of the book cover optical production , optical Systems for astrophotography ,Spectrographs , null test for paraboloids, the Caustic test or Gaviola Test, barlow lens ,lenses for astrophotography, optical flats ,Schmidt cameras construction ,methods and machinery, eyepieces and small lenses, other optical instruments, optical coating and coating equipment, the eye and atmosphere, and instrumentation for solar observations. A total of 263 illustrations are used. 650 pages