Optolong L-Quad Enhance 2 Inch Filter 10289 Substrates are free of striae

Substrates are free of striae and planeparallel polished to within 30 seconds of arc

The minimum tripod height has also been lowered per user feedback

In this configuration you can use a simple 45mm dovetail plate with tripod screw (not supplied) and fit your camera directly using a ball head (not supplied)

through the use of a complex 20 layer dielectric coating stack

Optolong L-Quad Enhance 2 Inch Filter 10289 Substrates are free of striaeOptolong L Quad Enhance 2 Inch Filter L QEF cuts out light pollution from mercury and sodium lamps and produces a nice broadband image with minimal colour cast. This filter is a broadband filter that suppresses light pollution wavelengths. It is good for star clusters, dark and reflection nebulae, and galaxies from light polluted skies. L Quad Enhance Introduction L Quad Enhance Filter (L QEF) is a quad bandpass light pollution suppression filter for