Antares 1.25" Filter Set with Variable Polarizer - FS3 Zoom Spotting Scopes The 7-element

The 7-element

35 in (85 mm) Secondary Mirror Obstruction by Diameter 36% Secondary Mirror Obstruction by Diameter 13% Optical Coatings StarBright XLT Optical Tube Length 22 in (559 mm) Optical Tube Weight 20 lbs

even when the pole star is obscured

2700 mm focal length

Antares 1.25" Filter Set with Variable Polarizer - FS3 Zoom Spotting Scopes The 7-elementAntares 1. 25" Filter Set 5 Pieces Multipurpose Product Highlights: Antares Multipurpose 1. 25" Filter Set Includes 5 each, 1. 25" Filters Includes a Variable ND Filter for lunar observing Includes 4 Deep Sky and Planetary Filters The Antares FS3 Set is a 1. 25" eyepiece filter set for all astronomy observing applications. This Antares 1. 25" Filter Set 5 Pieces Multipurpose includes an FXP cross polarizing variable ND filter for lunar, #11 green, #21