Optolong L2 Dual-Combo Set 2" (L-eXtreme + L-Synergy) The L2 Dual-Combo Set pairs two dual-narrowband filters so colour-camera users can make Hubble-palette images: the L-eXtreme (OIII 7 nm + H-alpha 7 nm) and the L-Synergy (OIII 7 nm + SII 7 nm). Both block other light-pollution lines and are optimised against bright-star halos. The set supports systems…
Manufacturer model: Optolong L2 Dual-Combo Set 2" · Specifications checked against manufacturer data on 2026-11-03
Optolong L2 Dual-Combo Set 2" (L-eXtreme + L-Synergy)
The L2 Dual-Combo Set pairs two dual-narrowband filters so colour-camera users can make Hubble-palette images: the L-eXtreme (OIII 7 nm + H-alpha 7 nm) and the L-Synergy (OIII 7 nm + SII 7 nm). Both block other light-pollution lines and are optimised against bright-star halos. The set supports systems of f/3.3 or slower.
Specifications
Format
2" mounted (M48 × 0.75)
Contents
1 × L-eXtreme, 1 × L-Synergy
L-eXtreme
OIII 500.7 nm + H-alpha 656.3 nm, 7 nm each
L-Synergy
OIII 500.7 nm + SII 672.4 nm, 7 nm each
Suitable optics
f/3.3 or slower
Packaging
Gift box with PP case and black EVA lining
Coating
Multi-layer anti-reflection coating on a non-cemented substrate, applied by ion-assisted deposition for durability and a stable centre wavelength with temperature.
Optolong L2 Dual-Combo Set 2" (L-eXtreme + L-Synergy) The L2 Dual-Combo Set pairs two dual-narrowband filters so colour-camera users can make Hubble-palette images: the L-eXtreme (OIII 7 nm + H-alpha 7 nm) and the L-Synergy (OIII 7 nm + SII 7 nm). Both block other light-pollution lines and are optimised against bright-star halos. The set supports systems…
Manufacturer model: Optolong L2 Dual-Combo Set 2" · Specifications checked against manufacturer data on 2026-11-03
