Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope and Field Flattener f/5 to f/7 - FCD100-0806-02-FF 2000-2200 Item Number 88-30070 Optical Design

Item Number 88-30070 Optical Design Achromatic refractor Magnification 26

70mm aperture is excellent for viewing the Moon and other bright night sky treats

ED80 Classic White f/6 Air Spaced Triplet with Hoya FCD100 optics and Integrated Dew Shield

the worse the coma

Project Pluto

Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope and Field Flattener f/5 to f/7 - FCD100-0806-02-FF 2000-2200 Item Number 88-30070 Optical DesignFeatures This is a field flattener for refractor type telescopes with a focal ratio of f 5 to f 7 Causes no change to the telescope focal length 2 inch barrel to easily attach to a two inch focuser Fully multi coated optics T ring thread on the device so a T ring can be used to easily attach a DSLR camera or a dedicated astrocamera 38 mm of clear aperture Requires 55mm (+ 2) of back focus spacing between the device and the camera sensor Premium high