focus

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Synonyms for focus

Synonyms for focus

a place of concentrated activity, influence, or importance

a point of origin from which ideas or influences, for example, originate

to direct toward a common center

to devote (oneself or one's efforts)

Synonyms for focus

the concentration of attention or energy on something

maximum clarity or distinctness of an image rendered by an optical system

maximum clarity or distinctness of an idea

a central point or locus of an infection in an organism

special emphasis attached to something

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a point of convergence of light (or other radiation) or a point from which it diverges

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a fixed reference point on the concave side of a conic section

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cause to converge on or toward a central point

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Antonyms

bring into focus or alignment

become focussed or come into focus

References in periodicals archive ?
Some of this vignetting was corrected by flat-field calibration, but the short, fast Newtonian system would have benefitted from a larger focuser and coma corrector that offered better corner-to-corner illumination.
L Lombard for 6-inch f/8 Dob sporting a low profile Crayford focuser and altitude trunnions running on bearings with an adjustable damper that sill needs a little more development to be effective.
The focuser was constructed from 2" x 2" x 1/4" aluminium angle section for the main body, and 1 1/2" x 1 1/2" aluminium angle for other parts.
Perhaps the most impressive feature of this entire system is the way one secondary cage can be removed and the other one attached, and the corrector lenses in the focuser drawtube can be swapped out--and when you're done you have a completely different system without even having to re-collimate.
Also, if they weren't on tight, I found they could loosen and turn under the weight of a star diagonal and heavy eyepiece if they were tilted towards the left side of the focuser, causing them to unscrew and flop down unnervingly.
After you've made your cutouts and glued your felt wings on, spray-paint the whole works flat black, using a paint that's designed for plastic, and mount it on your focuser.
This is especially true of the precision 5-inch dual-speed, rack-and-pinion focuser and 360[degrees] camera rotator.
8 pounds and comes standard with a 2V2-inch, dual-speed, rack-and-pinion focuser with 80 mm of travel.
Its rack-and-pinion focuser accepts l>4-inch eyepieces and includes a pair of 25- and 10-mm Kellners that yield 20 and 50x, respectively.
The FSQ-130ED's 5-inch focuser is designed to handle heavy cameras and accessories, and includes a camera-angle adjuster that lets you rotate your camera without losing focus.
In addition to the carbon-fiber truss tube, a trio of cooling fans for the primary mirror, a dual-speed 3-inch Crayford-style focuser, and a pair of Losmandy-style dovetail mounting bars, the scope features both mirrors made of fused quartz.