STC Filters Astro Multispectra Filter 2"

The STC Astro Multispectra filter serves as a versatile light pollution suppression tool, tailored for DSLR cameras, effectively countering interference from artificial sources like mercury and sodium street lights. While minimizing unwanted light, it preserves crucial nebula emission lines, heightening the contrast of celestial objects. With an impressive light transmission rate surpassing 95% for key spectral lines—such as Hydrogen-Alpha at 656.3nm, Oxygen III at 495.9 & 500.7nm, and Hydrogen-Beta at 486.1nm—it ensures optimal recording of deep-sky object wavelengths. Constructed with Schott® B270 optical glass and coated using Ion Beam-assisted deposition (IBAD) technology, it guarantees durability and easy maintenance. The NANO Anti-smudge coating enhances performance by repelling water and grease, while the matte black anodized and Teflon-coated frame design minimizes flare and facilitates hassle-free installation and removal.

The STC Astro-Multispectra filter excels in mitigating city lighting interference and enhancing wavelengths such as Hα, Hβ, OIII, and SII. It boasts a sturdy construction using Schott® B270 optical 2mm glass, complemented by IBAD technology to maintain spectral characteristics despite temperature and humidity changes. Additionally, its waterproof and grease-proof properties ensure enduring performance. While beneficial for photography and visual observations, it's important to avoid direct exposure to strong light sources to prevent interference and reflection issues.

SPECIFICATIONS:

Capacity: Suitable for photographs and visual observations.

Mount Material: Aluminum.

Connection (to Telescope): 2".

Frame: 2".

General:

Type: Filters.

Build Type: Broadband Filters.

Area of Application:

Anti Light-Pollution: Yes.

Hydrogen Nebulae: Yes.

Planetary Nebulae: Yes.

Comets: Yes.

Central Stars: No.

Supernova Remnants: Yes.

Useful for Photographs: Yes.

Visually Useful: Yes.