Concepedia
1995 · 16 citations · 0 references
Natural SciencesAstronomyPhysicsAstrophysicsObservational AstronomyOpticsObservational TechniquesObservatory InstrumentationObservatory OperationsTelescope OpticsOptical Telescope SystemsReflecting TelescopesRefracting TelescopesTelescope CalibrationTelescopes