achromat


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Related to achromat: Apochromat

achromat

[′ak·rə‚mat]
(optics)
References in periodicals archive ?
The Daguerreotype Achromat lens, introduced in Kickstarter yesterday morning, has not only raised its target funding of $100,000, but amassed $269,725 as of writing this piece.
DayStar recommends using achromats or apochomatic refractors without additional correcting elements near the focuser.
Tenders are invited for Purchase of one number of inverted fluorescent microscope with plan achromat objectives with colour ccd cooled camera with software, computer , ups and laser printer
ZD1 trinocular MICROSCOPE OBJECTIVES OF 5 achromat DIGITAL camera tethered to PC B-353 PL
Using 18th-century Dollond two-lens achromat refractors similar to the one Lomonosov utilized and following his recipe for weak solar filters ("not-so-heavily smoked glass"), at least two U.
5 GeV built by the University of Lund, 89 DC power systems for correcting magnets included in the achromat and the storage ring dipole magnets corrective linear accelerator as part of the construction project of the National Center for the Purposes of Electromagnetic Radiation Research, located on the Main Campus of the 600th anniversary of the Restoration of the Jagiellonian University in Krakow, co-financed by the EU under the OPIE.
They'd know it's not possible to produce a full-aperture corrector for an 8-meter professional RC telescope, but for the smaller instruments used by amateurs, might they not add a corrector lens --perhaps a two-element achromat to minimize false color--doing Meade one better?
Manufacturer Vixen Model 80M Price (US$) $1,100 Mount included Optics type achromat Aperture 80 mm Focal length f/ratio 910 mm f/11.
This was solved in the late 18th century by the invention of the achromat, which uses a pair of lenses made of two different kinds of glass.
The new 80-millimeter f/6 achromat ($379) and 66-mm f/6 ED apochromatic doublet ($329) include features not normally found at these prices, such as a dual-speed Crayford-style focuser and a custom-fitted, foam-lined case.
This refractor is a coated achromat of 4-inch (102-mm) aperture and 640-mm focal length (f/6.
It delivered everything a 70-mm achromat is known for: crisp, high-contrast views and fairly pronounced chromatic aberration (false color).