- Description
Sightron Japan Quad Band-Pass III 2" / 48 mm filter. Nebular filter for astrophotography with bandpass centered on the main nebular emissions (H-Beta, OIII, H-Alpha, SII). High quality filter made in Japan.
Fused quartz substrate with a high transmission index even in ultraviolet light, free of contamination and highly resistant to heat.
- Glass thickness : 1.5mm
- Glass type : Fused Quartz – excellent purity and transmission including UV. Extremely low contamination. High heat resistance.
- M48 (for 2″) and M28.57mm/0.53mm pitch (for 1.25″) mounted
- Made in Japan
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