Home » Optolong L-eXtreme 1.25" Dual Band Filter
Filtro Optolong L-eXtreme 1.25" per astrofotografia, ideale per ridurre l'inquinamento luminoso con bande H-Alpha, OIII e H-Beta.
Grafico dello spettro del filtro Optolong L-eXtreme, mostrando le lunghezze d'onda per H-Alpha, OIII e altre bande.
Filtro Optolong L-eXtreme 1.25 pollici misurato da un calibro digitale, ideale per astrofotografia con doppia banda passante.
Filtro L-eXtreme 1.25" Optolong per astrofotografia, con scatola originale, adatto a camere CMOS, CCD e DSLR per ridurre l'inquinamento luminoso.
Filtro Optolong L-eXtreme 1.25" per astrofotografia, ideale per ridurre l'inquinamento luminoso con bande H-Alpha, OIII e H-Beta.
Grafico dello spettro del filtro Optolong L-eXtreme, mostrando le lunghezze d'onda per H-Alpha, OIII e altre bande.
Filtro Optolong L-eXtreme 1.25 pollici misurato da un calibro digitale, ideale per astrofotografia con doppia banda passante.
Filtro L-eXtreme 1.25" Optolong per astrofotografia, con scatola originale, adatto a camere CMOS, CCD e DSLR per ridurre l'inquinamento luminoso.
Optolong

Optolong L-eXtreme 1.25" Dual Band Filter

Not in stock: will be backordered
Product Code: OPL-eXtreme-1
€219,00 EUR incl. VAT
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Optolong L-eXtreme 1.25” – 7nm Dual Band Filter for Astrophotography

The Optolong L-eXtreme 1.25” (M28×0.75 – 31.8mm) is a 7nm dual band filter, the evolution of the L-eNhance. It precisely isolates emission lines H-Alpha (656nm), OIII (500nm) and H-Beta (486nm) with up to 90% peak transmission and effective suppression of all artificial and unwanted light.

Compatible with DSLR, color CMOS and mono/color CCD. Perfect for high-contrast nebula imaging even under urban skies.

Technical Specifications

Filter typeDual Band (H-Alpha + OIII + H-Beta)
Bandwidth7nm
Peak transmissionUp to 90%
Format1.25” (31.8mm) – M28×0.75
Thickness1.85mm
Surface quality60/40 (MIL-O-13830)
Parallelism<30"
Wavefront RMS1/4λ
Clear aperture26mm
Recommended camerasColor CMOS, DSLR, CCD mono/color

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