Antlia Edge 4.5nm OIII Narrowband Filter - 31 mm Unmounted type-telescope-eyepieces All-Metal Precision Internal Construction for

All-Metal Precision Internal Construction for stability and strength

Embrace the sun's majesty with the Baader Cool-Ceramic Safety Herschel Solar Photographic Prism Mark II—an investment in your astronomical journey that combines safety

Sky-Watcher EQ8-R Series Polar Scope

the 256M DDR3 memory ensures a more stable data transmission during long exposures without frame loss

better facilitating the imaging process of astrophotographers

Antlia Edge 4.5nm OIII Narrowband Filter - 31 mm Unmounted type-telescope-eyepieces All-Metal Precision Internal Construction forAntlia 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