Click to expand Tap to zoom Optolong H-Alpha 7nm Filter - 2" Mounted by Optolong $259.00 SKU OPT-HA-7nm-2 More on the way: This product will not ship immediately. Contact us for estimated delivery. 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart {} { "rp_lazyload": 1, "rp_status": 1, "rp_titletext": {"title":"Featured Products","text":"Choose your vibes"}, "currency": { "symbol": "$", "iso_code": "USD" } } {}
Sizes 2" Mounted Specifications CWL(centre wavelength): 656.3nm Fwhm: 7nm Tpeak: <85% Coating Wavelength: 300-1100nm Optical Denisity: OD3 Surface Quality: 60/40 Transmitted Wavefront RMS: λ/4 Parallelism (arcsec): 30s