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as the red light it passes is the least refracted by air currents in our atmosphere
Ideal for Accurate Polar Alignment
The final upgrade is something that people have asked us about for years
Some solar observers prefer the warmer color produced by a glass filter
Open Box Fluorostar 132 f/7 APO Space Grey Reflector as the red light itThis is an open box unit, in brand new condition with Factory Warranty. Enjoy huge savings! Specifications Aperture 132mm Focal Ratio F 7 Focal Length 925mm Objective Type 3 elements, Air spaced, FPL 53 Resolving Power 0. 86" Limiting Magnitude 14. 5 Image Circle 36mm Lens Shade Retractable (O. D. 168mm) Focuser All New 3. 3" R & P Focuser 360 rotatable graduated camera adjuster Tube Diameter 141mm Tube Length 104cm (Fully Extended) 78cm (Fully
US$ 109.50
US$ 31.95
US$ 264.50
