Filtre O-III 18nm pour Télescope 1.25 Pouce - SVBONY autopostr_instagram_68716 Internal length: 39 mm (model

Internal length: 39 mm (model W2370B)

Conçu pour les conférences

Universal Compatibility: Compatible with a wide range of mounts and finders

Motion detection: supported

Filtre O-III 18nm pour Télescope 1.25 Pouce - SVBONY autopostr_instagram_68716 Internal length: 39 mm (modelThe 1. 25 inch O III filter is useful for large telescopes where the Moon's light can be extremely blinding. It brings out details on darker celestial objects like nebulas. It only allows the doubly ionized oxygen lines between 495. 9 nm and 500. 7 nm to pass through with an efficiency of 90%. Features Size: 1. 25 inches (18nm) Blocking range: 400 700nm Transmittance: 90% at 495. 9nm and 500. 7nm FWHM: 182nm Thickness: 1. 85mm Benefits This filter is