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102mm SPHERICAL PRIMARY MIRROR w/CELL, 38MM X27MM SECONDARY MIRROR WITH CELL.


THESE MIRRORS WERE DISPLAYED AT TRADE SHOWS AND MAY SHOW SIGNS OF HANDLING BUT THERE ARE NO GOUGES OR SCRATCHES IN THE GLASS. THERE MAY BE A FEW NEARLY IMPERCEPTIBLE HAIRLINE SCRATCHES IN THE MIRROR COATING OR FINGERPRINT SMUDGE FROM BEING HANDLED BUT NO DAMAGE TO THE MIRROR. CLEANING INSTRUCTIONS AVAILABLE UPON REQUEST.


Heavy Duty Primary Mirror Cell with Push/Pull Collimation Screws, Metal Housing


Secondary Mirror Cell


Mirror Cell (PRIMARY AND SECONDARY) Inner Dimensions: 140mm (FITS A 140MM O.D. TELESCOPE TUBE)


Primary Mirror dimensions: 102mm Diameter


Secondary Mirror dimensions: 37mm x 27mm


Primary Mirror Diffraction Limited L4 (1/4 wave in Sodium Light) Plate Glass


Aluminized(92%) and SiO(Quartz Overcoat)


Primary Mirror FL (focal length): 900mm


Primary Mirror Pre Set Collimation Dot Hand Crafted and Ronchi Tested for high Reflectivity


Resolving Power (arc seconds): .97


PRIMARY AND SECONDARY CELL COLORS MAY NOT MATCH EXACTLY, RANGING FROM A VERY DARK GREY TO BLACK.


Please see other listings for secondary mirrors for those that like to build their own telescopes.


FREE ship rate is for within the Continental U.S.



 


 

Filed under: Eyepieces & Accessories