Orion SpaceProbe™ 130ST EQ (307 x 130mm) Telescope
Optical Design: Newtonians, Optical Diameter: 130 mm, Finderscope type: Optical, Focal Length: 650 mm, Max Useful Magnification: ... |
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Orion SpaceProbe™ 130ST EQ (307 x 130mm) Telescope - The SpaceProbe 130ST EQ is a rich-field Newtonian reflector with a tube only 24" long compared to the 33" tube length of the standard 130 EQ. The focal length of the ST's 130mm (5.1") primary mirror is 650mm (f/5), producing a wider field of view and brighter images for a given eyepiece focal length. The diffraction-limited parabolic primary mirror is the same type used on much larger reflectors costing substantially more. On a short-focal-length design like this one, a parabolic mirror is a must for delivering sharp, detailed images.
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