Introduction and general characteristics

Good choice! Have fun with your new Omegon guide scope. 

 The objective lenses of FS-200/FS-250 guide scopes are designed as a two-piece glued achromatic assembly, with multi-layer coating to improve the transmittance of the lens. The scope barrel is made of aluminum alloy and CNC machined to ensure both stability and aesthetics. The scopes specifications are: 

 Product ID Focal length Aperture Focal ratio Objective thread Tube length x diameter Width x Height at focuser Focuser travel Connections on focuser 86594, 86816 200mm 45mm f/4.5 M48x0.75 inner thread 210mm x 50.8mm 78.2mm x 67 mm 35mm 1.25” clamp + M42x0.75 (T2) outer thread 86595, 86817 250mm 45mm f/5.6 260mm x 50.8mm 35mm 

 In the “ringed” version (product ID in italics above) , the FlexiSpeed Guidescope comes as a bundle with the Guidescope Rings 60mm. For their usage, please refer to the separate instructions there.