Vixen Telescope SD Reducer HD Kit - Impulse. - Camera Gear

Also suitable for full frame DSLR cameras , Dimensions: 68 x 45., 3 mm; Weight 237 g The Vixen SD103SII Telescope OTA is a new 103 mm apochromatic refractor with high-performance Super-ED glass (= SD). The advantage of this SD... It creates a cheaper opening ratio (aperture). Telescope Focal Reducers - Rother Valley Optics Ltd Focal Length Shortener Vixen Telescope SD Reducer HD Kit - Impulse. - Camera Gear Telescope Reducer 0.79x The reducer shortens the focal length by a factor of 0., 79 or 0., 77 Even faster astro-photographs with this VSD 100 apochromat focal reducer: The focal length is reduced to 300mm. This means a focal ratio of f/3 In addition, the field of view increases so that even larger celestial objects can be observed or photographed. The required exposure time will be shorter, the look faster.