Focal point of the primary mirror where the light rays concentrate.
observation post
Area where most observations are carried out.
Cassegrain focus
Focal point where the image forms; located behind the primary mirror.
telescope
Optical instrument that uses an objective mirror to observe celestial bodies.
primary mirror
Mirror that reflects the light of celestial bodies, directing it toward the prime focus.
hour angle gear
Drive mechanism allowing the telescope to follow the polar axis.
flat mirror
Adjustable mirror making it possible to choose the location of the focus.
telescope base
Pedestal on which the telescope mount rests.
horseshoe mount
Mount used to support a large telescope and point it toward the celestial pole.
polar axis
Axis parallel to Earth’s axis of rotation; its rotation is opposite to that of Earth, making it possible to capture fixed images of an observed celestial body.
secondary mirror
Mirror that intercepts light and redirects it toward the Cassegrain focus through a hole in the center of the primary mirror.
laboratory
Area where the chemical composition of observed celestial bodies is studied using spectroscopy.
coudé focus
Focal point located at a distance from the telescope, obtained using a series of mirrors; stationary, it is used to conduct complex analyses and experiments.
interior dome shell
Regulates the temperature of the telescope so as to avoid air turbulence and prevent the mirror from becoming deformed.
