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lens

Celestron 94305 Two-inch Eyepiece and Filter Kit

June 21, 2010

Three E-Lux 2″ Eyepieces – 3-element fully multicoated optical design with a 56°apparent field of view 2″ Barlow Lens – [...]

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Abell 2218: A Galaxy Cluster Lens

June 21, 2010

What are those strange filaments? Background galaxies. Gravity can bend light, allowing huge clusters of galaxies to act as telescopes, [...]

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Celestron 93317 Omni Series 1.25″ Eyepiece

June 16, 2010

Four element Plossl optical design Blackened lens edges Multi-layer coating group on each lens Anodized to prevent reflection from the [...]

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Galileo FS720DX 720 x 80mm Astro Terrestial Refractor Telescope

June 12, 2010

Refractor telescope ideal for astronomical and terrestrial viewing FS Super Glide Mount offers smooth and precise operation Slow motion controls [...]

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Celestron Omni Series 1-1/4 4MM Eyepiece

April 19, 2010

4 Element premium symmetrical optical designs Fully Multi-Coated 52° Field of View Blackened lens edges Designer Color Product DescriptionIf you [...]

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How to Choose Binoculars For Astronomy

March 25, 2010

When buying binoculars for astronomy one of the main considerations is the light gathering capability of the binoculars you [...]

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The Einstein Cross Gravitational Lens

February 8, 2010

Most galaxies have a single nucleus — does this galaxy have four? The strange answer leads astronomers to conclude that [...]

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