2.5-m. I. Du Pont Telescope	Siding Springs Observatory	3.9-m Anglo-Australian Telescope	2.5-m Isaac Newton Telescope
FIG. t-25	FIG. t-26	FIG. t-27	FIG. t-28
by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific
The Soviet 6-m Telescope	The 6-meter mirror	The 6-meter Telescope's Dome	2.6-m Shaja Telescope, Crimean Observatory
FIG. t-29	FIG. t-30	FIG. t-31	FIG. t-32
by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific
Sacramento Peak Solar Observatory	6-inch Transit Circle Telescope	Arecibo 1,000-foot Radio Telescope	NRAO, Green Bank, W. Virginia
FIG. t-33	FIG. t-34	FIG. t-35	FIG. t-36
by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific
300-foot Transit Telescope	140-foot Telescope, NRAO	100-m Telescope, Effelsberg	Mark IA Telescope, Jodrell Bank
FIG. t-37	FIG. t-38	FIG. t-39	FIG. t-40
by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: the Astronomical society of the Pacific	by: The Astronomical society of the Pacific
64-m Telescope, Parkes, Australia	Holmdel Horn Antenna	Cambridge 5-km Array, England	Westerbork 6-km Array, Holland
FIG. t-41	FIG. t-42	FIG. t-43	FIG. t-44
by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific
Very Large Array, New Mexico	Kuiper Airborne Observatory	Infrared Astronomical Sat.	International Ultraviolet Explorer
FIG. t-45	FIG. t-46	FIG. t-47	FIG. t-48
by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific