34:T742,

The STC Astro Multispectra Filter is designed to suppress common urban light pollution sources such as mercury, sodium, and certain LED emissions, while preserving key astronomical wavelengths including H-alpha, H-beta, and OIII. It enhances contrast and color fidelity of stars, nebulae, and the Milky Way, allowing you to produce natural, high-clarity images even from suburban skies.

Built with premium Schott B270 optical glass and coated using STC’s proprietary Ion Beam Assisted Deposition (IBAD) technology, the filter ensures superior light transmission, durability, and anti-reflection performance. Perfect for wide-field astrophotography, Milky Way landscapes, and travel night-sky imaging.

Key Features:

Multi-spectral light-pollution suppression for natural star colors
Ideal for city or suburban astrophotography and Milky Way landscapes
High-transmission, anti-reflection coating for strong contrast
Schott optical glass with STC IBAD coating — scratch and stain resistant
Available in multiple thread sizes and clip-in versions for DSLR and mirrorless cameras

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STC Astro Duo-Narrowband Filter (Duo-NB)

STC Astro Multispectra Filter (MS)