Astromania 1.25" Variable Grey Polarizing Filter - Bundle with

Multi-Function: Designed for Reflector telescope; fit for standard 1.25 inch diameter; this sturdy laser unit allows to swiftly and precisely collimate Newtonian telescope; accurate collimation in a few minutes provide more clearer image;
High-Quality and Durable: High-quality metal construction and anodizing aluminium process; durable for long time use; require one CR2032 lithium battery Not Included;
Well-Engineered: The laser comes fully adjusted however further adjust if required; it has three openings for adjustment; arranged at 120°; which are initially sealed; small screw cap at the rear of the laser must be first unscrewed to allow this;
It helps you to adjust the brightness effectively; the variable polarizing filter allows for selective adjustment of brightness; which is useful for terrestrial observation and objects of the Solar System
These filters have a very large range of effectiveness; light transmission of polarizing filters is between 1 percent and 40percent

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