http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
The book provides a unified treatment of the characteristics of telescopes of all types, including telescopes whose performance is set by geometrical aberrations and the effect of the atmosphere, and those diffraction-limited telescopes designed for observations from above the atmosphere. It also contains thorough discussions of the principles underlying all spectroscopic instrumentation, giving special emphasis to grating instruments used with telescopes.
Astronomical instruments,Optical instruments