Buy Orion 10" f/3.9 Newtonian Astrograph Reflector Telescope

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Our largest reflector optimized for astro-imaging boasts 10-inch parabolic primary optics with a very fast f/3.9 focal ratio for exceptional wide-field, deep-space imaging performance. Even faint galaxies and nebulas exhibit stunning detail with limited exposure time when photographed through this large-aperture astrograph with a CCD imager or DSLR camera. You'll get incredibly bright, crisp images that will make apo refractor aficionados green with envy - and you'll have more green in your wallet thanks to this telescope's more-affordable Newtonian design. Both the 10-inch (254mm) primary and secondary mirror feature enhanced reflectivity (94%) aluminization for bright, contrast-rich images. The 82mm minor axis secondary mirror provides excellent full-field illumination with modern CCD imagers and DSLR cameras, with less than 8% light drop-off at the edge of APS-C sized sensors. The adjustable 4-vane secondary mirror holder features very thin, 1mm thick spider vanes to minimize diffra

Orion 10" f/3.9 Newtonian Astrograph Reflector Telescope

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Orion 10" f/3.9 Newtonian Astrograph Reflector Features :

• This affordable 10" astrograph is ideal for capturing stunning deep-sky astro-images
• Fast f/3.9 focal ratio provides swift wide-field imaging performance
• Enhanced reflectivity aluminum coatings on primary and secondary mirror provide 94% reflectivity
• Sturdy 2" dual-speed low-profile Crayford focuser permits ultra-fine focus with 11:1 ratio
• Extended tube length of 7.5" in front of the focuser blocks peripheral light, optimizing image contrast

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Orion 10" f/3.9 Reviews, 8.5 out of 10. based on 109 ratings