reflecting telescope

Optical instrument that uses an objective mirror to observe celestial bodies.

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finderscope

Small low-magnification telescope with a wide field of view; serves to locate celestial bodies.

eyepiece

Lens or system of lenses meant to magnify the image when placed before the eye.

cradle

Part that tightens around the main tube to secure it to the base.

main tube

The barrel of the telescope through which light rays travel; houses the optical system.

focusing knob

Adjusting device that makes it possible to obtain a clear image of the object.

right ascension setting scale

Graduated disk indicating the right ascension of the observed celestial body.

azimuth clamp

Clamp serving to lock the telescope along its horizontal axis.

altitude clamp

Clamp serving to lock the telescope along its vertical axis.

declination setting scale

Graduated disk indicating the declination of the celestial body observed.

azimuth fine adjustment

Fine-tuning device that serves to position the telescope horizontally.

altitude fine adjustment

Fine-tuning device that serves to position the telescope vertically.