NiSi 150x150mm Nano IR Neutral Density filter – ND4 (0.6) – 2 Stop System_V7 system 360-degree at single-axis/two-axis/three-axis all follow

360-degree at single-axis/two-axis/three-axis all follow without limitation

f/8 and 2541mm focal length

making it easy to align the telescope optics for optimum performance

Maximum Height: 63

NiSi 150x150mm Nano IR Neutral Density filter – ND4 (0.6) – 2 Stop System_V7 system 360-degree at single-axis/two-axis/three-axis all followTrue to life color, No color cast Provides a 2 stop light reduction No Vignetting High Definition Nano Coating on Both Sides, Water & Oil Repellent Compatible with the NiSi 150mm system The NiSi 150x150mm Nano IR Neutral Density filter ND4 (0. 6) 2 Stop is a Neutral Density (ND) filter that uniformly reduces the amount of light entering the lens. ND Filters can enable greater motion blurring and image detail by allowing a large aperture and a slow