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Exclusive Extragalactic 3D Database includes over 200
the user needn't worry about configurations
5Å PE Hydrogen Alpha
(Full disk viewing possible on refractors up to ~450mm)
Daystar 2" UV/IR Filter - DSIUV2 Telescope Controllers_SkyBT Exclusive Extragalactic 3D Database includesUV IR Cut Filter Blocks all other parts of the spectrum in the UV and IR. The Astronomik UV IR Blocker is the ideal choice as a luminance filter for any kind of digital photography. Because of the perfect blocking of UV and IR, all optical problems in these parts of the spectrum are avoided. It blocks the heat from reaching your filter and diagonal as well. The filter is optimized for systems with focal ratios between f 0. 5 and f 50. The typical