Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope and Field Flattener f/5 to f/7 - FCD100-0806-02-FF ed-apo-fcd100-triplet-series and a choice of over

and a choice of over 80

Hallo Northern Sky

Hoya FCD100 is considered the best glass ever produced by Hoya

which converts to the Explore STAR Transferable Extended Life of the Product Warranty when product is registered within 60 days of purchase

38 mm of clear aperture

Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope and Field Flattener f/5 to f/7 - FCD100-0806-02-FF ed-apo-fcd100-triplet-series and a choice of overFeatures 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