Focuser

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
A device which allows one to adjust the focus of an instrument such as a telescope.
"I decided to upgrade my telescope with a feather-touch focuser."

Example

"I decided to upgrade my telescope with a feather-touch focuser."

Etymology

From focus + -er.

Related phrases

Crayford focuser

More for "focuser"

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.