2" ED-1.5X Extender for FSQ-85ED, TSA-120, TOA-130/150 Telescopes (TKA37595)

Description The Takahashi Extender ED is a 1.5X focal length extender designed for use with the TSA-120, TOA-130/150 and FSQ-85 telescopes. The extender is constructed using extra-low dispersion (ED) glass and features a 2 inch barrel design. Specifications Telescope with Adapter 2" ED-1.5X EX with FSQ-85ED 2" ED-1.5X EX with 35-FL and FS-130ED 2" ED-1.5X EX with 35-FL and FS-130NS/NFB 2" ED-1.5X EX with 35-FL and FS-150B 2" ED-1.5X EX with 35-FL and TSA-120 Adapter Part Number TKA37595 TKA37595 TKA37595 TKA37595 TKA37595 Aperture 85mm 130mm 130mm 150mm 120mm Resolution 1.36" 0.89" 0.89" 0.77" 0.97" Limiting Magnitude 11.4 12.3 12.3 12.7 12.1 Light Gathering Power 147X 345X 345X 460X 293X Focal Length 680mm 975mm 1500mm 1650mm 1350mm Focal Ratio f/8.0 f/7.5 f/11.5 f/11.0 f/11.3 Image Circle Diameter  44mm  --- 44mm 44mm 44mm Optical Type Doublet ED Quadruplet Triplet ED Quintuplet Double ED Triplet Double ED Triplet ED Triplet Tube Diamet