Astronomical Telescope Eyepieces Accessories 1.25 inch Filter Optical Lens Medium Gray Density ND2 4 8 16 32 64 for Planet Moon Star Clusters

Specifications:

Interface Specification: 1.25 inches (for astronomical telescope 1.25 inches eyepiece)
Thread Specification: M28.6x0.6mm
Transmittance: 52% transmittance ND2, 25% transmittance ND4, 12.5% transmittance ND8, 6.25% transmittance ND16, 3.12% transmittance ND32, 1.56% transmittance ND64
Lens Material: Acrylic
Frame Material: Metal-Aluminum
Colour: Black

Package Included:

1x ND Filter