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The objective lens gathers and focuses light from distant objects.

The eyepiece magnifies the image formed by the objective lens or primary mirror.

The primary mirror collects and focuses light in reflecting telescopes.

The secondary mirror redirects the focused light from the primary mirror to the eyepiece or detector.

The mount supports the telescope and allows it to move and track celestial objects.

A small, secondary scope mounted on the main telescope, used to locate objects in the night sky.

The mechanism that moves the eyepiece or camera to achieve sharp focus.

An auxiliary lens used to increase the effective focal length of a telescope, thereby increasing magnification.

A shield that prevents the formation of condensation on the lens or mirror of the telescope.

A glass plate that reduces optical aberrations in the light path of a telescope.

A mirror that changes the direction of the light path, typically by 90 degrees, for more comfortable viewing.

A three-legged stand that provides a stable base for a telescope mount.

A filter that blocks a significant portion of sunlight to make solar observation safe.

A fan used to regulate the temperature of the telescope's primary mirror to reduce thermal distortion.

A weight that balances the telescope on its mount to ensure smooth and stable movement.

The axis on an equatorial mount that allows the telescope to move up and down, corresponding to celestial latitude.

The axis on an equatorial mount that allows the telescope to move side to side, corresponding to celestial longitude.

A computerized system that automates the movement and tracking of a telescope to find celestial objects.

A simple, altazimuth mount designed specifically for large, portable reflecting telescopes.