Feature

●Obvious effect against harmful city light.
●With nanometer coating system to ensure that the film layer is high temperature resistant, corrosion resistant, not easy to fall off and other properties of a uniform coating.
●Using international standard discussion threads, suitable for a variety of astronomical telescopes with British thread standard. Align the filter thread to the rear thread of the eyepiece, turn the filter lens into the eyepiece, watch it and use it.
●Made of good quality aluminium alloy, solid, durable and wear-resistant and corrosion resistant.
●Compact size, light weight and portable.


Description

Specification:
Element Type:Astronomic Telescopic Filter
Material: aluminium alloy.
Colour: black.
Size: approx. 31.7 mm.
Approximate weight.27gApplication: universal for astronomical telescopes

Package list:
1 x astronomical telescopic filter