Antlia Edge 4.5nm SII Narrowband Filter - 31 mm Unmounted CS Lens The Sky-Watcher Classic Dobsonian Telescope

The Sky-Watcher Classic Dobsonian Telescope 254 mm/1200 mm (10"aperture and 1200 mm focal length) has a paraboloidal primary mirror to eliminate spherical aberration and a four-arm secondary mirror bracket with fine supports (0

25" and 2" eyepieces and other compatible items

This Starlight Innovation Star-Chair IV is specifically designed to provide secure and comfortable seating for astronomical observations as well as other optical tasks

award-winning StarSense sky recognition technology uses your smartphone to analyze star patterns overhead and calculate the telescope’s position in real-time

Full Frame Design: Optimized for APS-C sized sensors: Including most DSLR cameras and Nightscape CCD cameras

Antlia Edge 4.5nm SII Narrowband Filter - 31 mm Unmounted CS Lens The Sky-Watcher Classic Dobsonian TelescopeAntlia OIII Edge Filter Highlights: Type: Sulfur (SII) FWHM: 4. 5 nm CWL: 672. 4nm Filter Thickness: 2 mm + 0. 05 mm Peak Transmission: 90% Size: 31 mm Unmounted Antlia SII 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 EDGE