Astronomik L-2 UV-IR Block XT Clip-Filter EOS R XL (Astronomik, SKU: 10212210 / 8h11gf) is a luminance filter designed for astrophotography that blocks ultraviolet (UV) and infrared (IR) radiation. The L-2 version provides a standard spectral window and is intended for most optical systems equipped with a corrector or field flattener. The filter offers high transmission across the entire visible spectrum, ensuring maximum sensitivity and signal capture in the luminance channel.

Key features

• luminance filter blocking UV and IR radiation
• L-2 version with standard spectral window
• suitable for most optical systems with corrector or field flattener
• high transmission across the entire visible spectrum
• minimized halos and reflections due to optimized transmission characteristics
• XT version optimized for astrophotography with wide-angle lenses
• extremely thin substrate (0.3mm or 0.5mm) reducing corner image distortion
• parfocal with other Astronomik filters
• diffraction-limited design – no degradation of resolution or contrast
• Astronomik MFR coating optimized for a wide range of focal ratios
• strict quality control before shipment

Box contents

• Astronomik L-2 UV-IR Block XT Clip-Filter EOS R XL
• high-quality, durable filter storage box

Technical specifications

• type: L-2 UV-IR Block (luminance)
• version: XT Clip-Filter XL
• compatibility: Canon EOS R
• XT substrate thickness: 0.3mm or 0.5mm
• finely polished optical glass free from streaks, internal stress and bubbles
• coating: Astronomik MFR
• fully resistant to high humidity and aging effects
• precision substrate machining with wedge error well below common tolerances

The L-2 filter provides an optimal balance between transmission and color correction, delivering high contrast, sharp stars and maximum luminance signal for astrophotography.