The STC Astro Duo Narrowband Filter 2″ targets Ha and OIII emission lines to deliver very high contrast colour images for one shot colour and DSLR cameras.
- STC Astro Duo Narrowband filter 2″ reduces interference from artificial lighting and enhances the Ha and OIII emission lines.
- IBAD (Ion beam-assisted deposition) coating technology gives the glass have higher durability for safer cleaning, and prevents ageing changes in spectral characteristics over time.
- Matte black anodised and Teflon-coated cell eliminates flare and makes it easy to install or remove from your lens.
- Also available in 1.25″ size and as a clip filter for many cameras – please ask
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