4-inch f-1000mm Takahashi doublet fluorite apochromat. Made in 1990, this was a dedicated line of refractors for Japanese and European planetary observers and never ment to be sold in the United States. Using the method of long focal length combined with unmatched CaF2, the FC-100N could produce the dame resolution and imagery as present in my now gone TMB-100/800. And I have had this scope side by side at TMSP against a FC-100 and FS-102. Both scopes displayed very minor secondary spectrum on Vega and Arcturus at 140x-155x respectively while the FC-100N did not.
Included is a new Telrad, Tak tube clamp, Tak 6x30 finder and bracket, and eyepiece adapters. FC-100N ota is in 9++ condition. Call from 6am to 11pm PST for detailed elaboration over any questions you have about this remarkable refractor. $2500 shipped.