Founder Optics 106 mm f/6 Triplet ED APO Refractor Package - FOT106 70 mm Refractor For the astrophotographers looking to

For the astrophotographers looking to reduce Periodic Error

Barrel Size: 3"

Now all of these innovations have come together in one telescope package: The NexStar Evolution 8" HD

Focal Length (mm): 3910 mm (154 in)

This OTA is the largest aperture and fastest (f/2

Founder Optics 106 mm f/6 Triplet ED APO Refractor Package - FOT106 70 mm Refractor For the astrophotographers looking toThis beautiful 106 mm mm f 6 ED APO Triplet Refractor by Founder Optics includes not one but two ED APO lenses for amazingly sharp and clear images! One of the lenses is made with FPL53 glass and the other is designed with FPL51 glass. A third lens is made of Lanthanum! The lenses are widely spaced, unlike many APO triplets on the market today, giving it a much sought after designation of Super Triplet, or FST, for Fully Separated Triplet. The optics