IR Pass 850nm planetary filter

Antlia IR Pass 850nm filter

The Antlia IR Pass 850nm filter is specially designed for advanced deep infrared planetary imaging. It lets through only wavelengths above 850nm, drastically reducing the effect of atmospheric turbulence (seeing) and enabling exceptionally sharp planetary images. This filter is particularly useful for imaging Mars, Jupiter and Saturn, as well as for daytime imaging.

Key features

• Selective infrared transmission from 850nm
• Significant improvement in sharpness by reducing the impact of atmospheric seeing
• Allows planetary imaging even in broad daylight, thanks to a darkened background sky
• High-quality Schott optical glass substrate
• Double-sided optical polishing for λ/4 flatness
• Surface quality: 60/40 (MIL-O-13830 standard)
• Parallelism less than 30 arcsec

Ideal applications

• Infrared imaging of Mars, Jupiter, Saturn
• High-definition planetary capture in deep infrared
• Enhanced image sharpness and contrast in combination with RGB and U-Venus filters

Technical specifications

• Format: 1.25″ mounted (M28.5×0.6)
• Thickness: 2mm ± 0.05mm
• Substrate: Schott optical glass
• Surface: double-sided λ/4 optical polishing
• Parallelism: <30 arcsec

Bracket design

• Ultra-slim frame to maximize usable aperture and minimize vignetting
• Durable black anodized finish
• Durable, indestructible laser engraving

Warnings and precautions

• Never use for solar observation.
• Do not use for visual observation.
• Filter exclusively for planetary infrared astrophotography.

Directions for use

• Use with near-infrared sensitive cameras
• Prefer well-corrected infrared optics for maximum sharpness
• Can be combined with RGB or U-Venus images to enhance final quality