Astronomical Diffraction Grating - 100 or 200 line/mm, Diameter 50 mm, unmounted

High-efficiency blazed diffraction grating with 100 or 200 line/mm spacing. Built from the same high-grade materials as our SA-100 and  SA-200, this grating can be integrated with a telescope, camera, filter wheel, lab bench, or custom setup. Supplied unmounted on 1.1 mm AR-coated glass. Diameter: 50 mm (2 in). Its larger aperture collects significantly more light than the 25 mm Star Analyser series. Important: handle this unmounted grating with care to avoid damage. Lead time: 4–5 weeks from order. We do not sell this product in the UK or the EU.