apochromat


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apochromat

[‚ap·ə′krō·mat]
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The CFI SR HP Plan Apochromat Lambda S 100XC Sil objective is designed for use with Nikons new silicone oil (ne?
Japan : New Objective lens for Biological Microscope CFI SR HP Plan Apochromat Lambda S 100XC Sil
If you're looking for a moderate-aperture apochromat, consider the new arrival from TMB's Signature Series, the TMB-130.
Hot new products for 2007: it's time for us to make our annual selection of the most intriguing new products entering the market
Because this lens is an apochromat, chromatic abberations (axial chromatic abbera- tions) are corrected with elements of special glass materials with anomalous partial disper- sion.
Germany : Carl Zeiss presents compact telephoto lens
Those more experienced, however, will recognize that the Petzval, SD, and apochromat terms worked into the respective Zenith Star monikers (not to mention the prices) suggest different levels of optical performance.
Triple play: the ZenithStar 66 refractors: portability, performance, and pleasure--these refractors from William Optics offer all three. But which one is right for you?
9 Lens type Achromat Apochromat Focuser size See note (5) 1 1/4 inches Carrying case Included Optional Tripod mounting block Included Optional (8) Minimum tube length 10 1/4 inches 15 3/4 inches Weight 1 lb (0.
Compact wide-field refractors
The Fluoro-Star FLT-110 is William Optics' first true apochromat, employing a triplet lens designed and fabricated by Telescope Engineering Company (TEC) in Golden, Colorado, itself the producer of a growing line of fine telescopes (its 140-mm apo was reviewed in our December 2003 issue, page 54).
Another dream apo refractor
This dramatic reduction in focal length means that even a 7-inch apochromat can be transported to a star party or remote dark-sky observing site.
Curing the refractor blues
By the way, achromat means "without color," while apochromat means "without color--but, we're serious this time.
An apochromat for the masses
5-inch) f/7 apochromat, I have a better appreciation for their enthusiasm.
TEC's 5 1/2-inch Apochromat: there's no denying that high-end apochromatic refractors are currently enjoying an unprecedented wave of popularity. Here's one of the reasons
Apochromats provide the best possible performance per unit of aperture, and are also ideal for astrophotography.
What to know before you buy: although they come in a bewildering range of sizes and shapes, all telescopes are variations on a few simple themes
Apochromats are free of the halo issue, but big ones are extremely expensive.
Capturing the solar system: recording impressive portraits of the Moon and planets is surprisingly simple

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