IDAS HEUIB-II filter

IDAS HEUIB-II Filter: Supercharge Your H-Alpha Nebula Imaging
The IDAS HEUIB-II is not your average UV/IR-cut filter—it's a precision tool designed to bring out the finest detail in H-alpha emission nebulae. With enhanced red-spectrum suppression and cutting-edge IGAD coating technology, this filter boosts contrast where it matters most—while maintaining durability and stability for long-term, high-performance imaging.

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Key Features – Built for Ha Brilliance, Engineered to Last

• Enhanced H-alpha Emission Sensitivity

  • Specifically tuned to enhance the 656.3nm H-alpha wavelength

  • Suppresses unwanted red-end spectrum interference for cleaner, higher-contrast nebula images

  • Outperforms standard IR-cut filters like UIBAR-III and even the original HEUIB

• Red-End Suppression Redefined

  • Expands suppression into the far red portion of the spectrum

  • Improves clarity and structure in emission nebulae by isolating H-alpha from background noise

  • Helps reveal finer details and subtle structures in extended hydrogen-rich regions

• IGAD Coating Technology (Ion-Gun Assist Deposition)

  • Same advanced coating process used in IDAS’s LPS-P2 and LPS-V4 filters

  • Results in quartz-hard, ultra-durable multi-layer coatings

  • Increases adherence between layers and substrate, preventing delamination over time

• Unmatched Environmental Stability

  • Virtually zero aging or spectral shift from changes in humidity or temperature

  • Ideal for consistent long-term use in varying climates and conditions

  • Maintains optical performance year after year—no surprises, just results

• UV/IR Cut for OSC Cameras & DSLRs

  • Blocks unwanted UV and infrared light that can blur or distort images

  • Preserves focus sharpness and color accuracy with color CMOS and DSLR sensors

• Perfect for Emission Nebulae Imaging

  • An essential upgrade for photographers targeting HII regions, supernova remnants, and star-forming clouds

  • Pair with fast optics or narrowband imaging setups for stunning deep-sky results

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If you’re serious about capturing crisp, contrast-rich images of H-alpha targets, the IDAS HEUIB-II Filter gives your astro camera the clarity it deserves—enhanced performance, rock-solid durability, and next-level red sensitivity in one powerful package.