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

through the use of a complex 20 layer dielectric coating stack

Celestron Ultima 18-55 x65mm Angled Zoom Spotting Scope

For telescopes

The minimum tripod height has also been lowered per user feedback

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