Antlia Edge 4.5nm OIII Narrowband Filter - 31 mm Unmounted type-telescope-eyepieces Sky-Watcher EQ8-R Series Polar Scope

Sky-Watcher EQ8-R Series Polar Scope

All-Metal Precision Internal Construction for stability and strength

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ADJUSTABLE LED ILLUMINATION: A ring of white LEDs with brightness control ensures your specimens are always well-lit

75 filter thread))/M54/M68 adapters

Antlia Edge 4.5nm OIII Narrowband Filter - 31 mm Unmounted type-telescope-eyepieces Sky-Watcher EQ8-R Series Polar ScopeAntlia OIII Edge Filter Highlights: Type: Oxygen III (OIII) FWHM: 4. 5 nm CWL: 500. 7nm Filter Thickness: 2 mm + 0. 05 mm Peak Transmission: 90% Size: 31 mm Unmounted Antlia OIII EDGE narrowband filter optimizes the FWHM (full width half maximum) to 4. 5nm bandpass. The suppression of optical density (OD)5 on unwanted wavelengths and the excellent transmittance characteristics found in the Antlia 3nm Pro series has been incorporated into the 4. 5nm