Filtre H-Beta 25nm 1.25" - SVBONY autopostr_instagram_68716 CPL filter allowing to eliminate

CPL filter allowing to eliminate polarization and improve contrast

Sortie HDMI locale sur l'émetteur pour affichage simultané

the SV305 Pro is compatible with PHD2 guiding software and the ASCOM platform

Variable polarizing filter

Filtre H-Beta 25nm 1.25" - SVBONY autopostr_instagram_68716 CPL filter allowing to eliminateSV132 H Beta 25nm 1. 25 inch filter to reduce light pollution Designed for observing the Horsehead, California, and Cocoon nebulae with a moderate to large aperture telescope in dark skies. High precision optical polishing on both sides; the filter substrate is polished to 1 4 wave and <30 parallelism on both surfaces, preventing halos. High precision optical coatings improve transmission and cutoff depth; they offer over 90% transmission and