Friday, February 3, 2012



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Celestron 94305 Two-Inch Eyepiece and Filter Kit

by Father Sky

Three E-Lux 2" Eyepieces - 3-element fully multicoated optical design with a 56°apparent field of view 2" Barlow Lens - 2x A Barlow lens doubles the magnifying power of your eyepiece by doubling its effective focal length. Five Colored Eyepiece (Lunar & Planetary) Filters - 2", Included are Kodak Wratten #12 (deep yellow) 2" Mirror [...]

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Abell 2218: A Galaxy Cluster Lens

by Father Sky

What are those strange filaments? Background galaxies. Gravity can bend light, allowing huge clusters of galaxies to act as telescopes, and distorting images of background galaxies into elongated strands. Almost all of the bright objects in this Hubble Space Telescope image are galaxies in the cluster known as Abell 2218. The cluster is so massive [...]

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Celestron 93317 Omni Series 1.25" Eyepiece

by Father Sky

Four element Plossl optical design Blackened lens edges Multi-layer coating group on each lens Anodized to prevent reflection from the top eyepiece barrel Product DescriptionThis Omni series 6mm 1.25" Plossl eyepiece includes blackened lens edges to minimize internal reflection and maximize contrast. Every air-to-glass optical surface has a multi-layer coating group for the highest possible [...]

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Galileo FS720DX 720 X 80mm Astro Terrestial Refractor Telescope

by Father Sky

Refractor telescope ideal for astronomical and terrestrial viewing FS Super Glide Mount offers smooth and precise operation Slow motion controls for fine adjustments while viewing Focal length: 700mm Objective lens: 80mm Product DescriptionGalileo FS-720DX Refractor Telescope for viewing land, sea, and stars. To see or not to see, that is the question. The answer? It's [...]

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Celestron Omni Series 1-1/4 4MM Eyepiece

by Father Sky

4 Element premium symmetrical optical designs Fully Multi-Coated 52° Field of View Blackened lens edges Designer Color Product DescriptionIf you are looking to move up to a higher quality eyepiece the Omni series provides more enhanced features in a wider selection of focal lengths. Celestron designed this series with the finer points in mind so [...]

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How to Choose Binoculars for Astronomy

by Father Sky

When buying binoculars for astronomy one of the main considerations is the light gathering capability of the binoculars you are looking to buy and therefore the size of the objective lens is extremely important. Before you start check out the range of binoculars for astronomy that are currently on the market you need to [...]

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The Einstein Cross Gravitational Lens

by Father Sky

Most galaxies have a single nucleus -- does this galaxy have four? The strange answer leads astronomers to conclude that the nucleus of the surrounding galaxy is not even visible in this image. The central cloverleaf is rather light emitted from a background quasar. The gravitational field of the visible foreground galaxy breaks light from [...]

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