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A small telescope attached to a large telescope to use in setting the line of the larger one
Answer for the clue "A small telescope attached to a large telescope to use in setting the line of the larger one ", 10 letters:
collimator
Alternative clues for the word collimator
Word definitions for collimator in dictionaries
WordNet
Word definitions in WordNet
n. a small telescope attached to a large telescope to use in setting the line of the larger one optical device consisting of a tube containing a convex achromatic lens at one end and a slit at the other with the slit at the focus of the lens; light rays ...
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Collimator \Col"li*ma`tor\, n. (Astron.) A telescope arranged and used to determine errors of collimation, both vertical and horizontal. --Nichol. (Optics) A tube having a convex lens at one end and at the other a small opening or slit which is at the principal ...
Wiktionary
Word definitions in Wiktionary
n. 1 (context physics English) An optical device that generates a parallel beam of light. Often used to compensate for laser beam divergence. 2 (context physics English) A similar device that produces a parallel beam of particles such as neutrons. 3 (context ...
Wikipedia
Word definitions in Wikipedia
A collimator is a device that narrows a beam of particles or waves. To narrow can mean either to cause the directions of motion to become more aligned in a specific direction (i.e., make collimated light or parallel rays), or to cause the spatial cross ...
Usage examples of collimator.
There were only three switches on the box: a pushbutton to start the generator, a click-detent rheostat to activate Baby Two, and a shuttle knob for pointing the new collimator head toward a target.
The collimator atop the Trigger was already pointing down the street toward his targets.
I just need to put together the collimator I've had rattling around in my head for a week or so, while you wire in a couple of quick-and-dirty controls for the truck cab.
I'm always looking out for a good buy in spare macronucleic collimators, because they have a tendency to blow right after snapout, when we're millions of kilometers from anywhere and moving fast.