Antlia H-alpha 4.5nmEDGE filter

Capture the finest details of H-alpha nebulae with the Antlia H-alpha 4.5nm EDGE filter. Specially designed for astrophotography, it offers exceptional transmission and optimum noise reduction to reveal the faintest structures in the deep sky.

Why choose the Antlia H-alpha 4.5nm EDGE filter?

• High transmission (>90% at 656.3nm) to capture maximum light signal.
• Optimized bandwidth at 4.5nm for maximum contrast between nebula and sky background.
• OD5 deletion unwanted wavelengths to limit light interference.
• Compatibility up to f/3 without significant signal loss.
• Robust design with optical monoblock substrate, blackened edges and scratch-resistant coating.

Ideal applications

• Imaging H-alpha nebulae
• Observation of planetary nebulae and Wolf-Rayet
• Photograph of supernova remnants
• Imaging in light-polluted areas or dark sites
• Extended photo sessions even under moonlight

Filter technical specifications

Size options available

• Mounted: 1.25″, 2″
• Unmounted: Ø31mm, Ø36mm, Ø50mm

Frame features

• Ultra-thin cell to reduce vignetting
• Black anodized finish for durability
• Weather-resistant laser engraving

Spectral curves

Important notice

Never look directly at the sun with this filter. This could result in serious eye damage.