2-Inch LRGB/SHO Filters Are Here – Ready to Elevate Your Astro Imaging!

 

Diameter: 2 inches (50.8mm)
Thickness: 2mm
Thread: M48 X 0.75mm
Lens Material: Optical Glass
Frame Material: Metal - Aluminum
 

 

High-Quality German Schott Glass

The filter is crafted from high-grade German Schott optical glass, with a diameter of 2 inches (50.8 mm) and a thickness of 2 mm. It undergoes double-sided polishing to ensure an exceptionally smooth, flat surface, providing outstanding optical performance suited for demanding astrophotography applications.

IAD Dense Coating Process

Using IAD (Ion-Assisted Deposition) coating technology, the coating layer is dense, wear-resistant, and highly stable, with minimal temperature drift. This significantly enhances the product's lifespan. The high coating strength effectively improves durability and ensures stable imaging quality.

 

High Transmission Rate of Anti-Reflective Coating

The filter features a high-transparency, anti-reflective coating with a transmission rate exceeding 90%, effectively reducing surface and internal reflections to minimize halo effects. This ensures clear imaging quality. The filter's optical polishing enhances surface uniformity, resulting in perfect optical performance.

 

Durable and Easy to Clean

The filter's coating is highly durable and scratch-resistant, ensuring it remains intact even with regular cleaning. The optimized coating stressed design prevents any distortion of the optical substrate's flatness, which helps maintain precise filtering accuracy and extends the filter's lifespan.
 

Compatible with Full-Frame and APS-C Equipment

Constructed with a single-piece, glue-free design, this filter is compatible with both full-frame and APS-C astrophotography equipment, including astronomical eyepieces and cameras. This offers users a wider range of compatibility options.

Premium Aluminum Frame for Flexible 2-Inch Filter Wheel Compatibility

The filter frame is crafted from high-strength aluminum alloy, featuring an anodized matte finish for excellent corrosion resistance. It is easy to handle, durable, and compatible with most mainstream 2-inch electronic filter wheel. This allows users to conveniently pair it with other equipment for greater flexibility and ease of use.

Precise Wavelength Positioning

The 2-inch series filters offer high-precision wavelength positioning, with a tolerance of only ±0.3 nm, which is crucial for astrophotography. These filters effectively block or enhance specific wavelengths, enabling accurate capture of celestial objects' emission lines or absorption spectra. This ensures true-to-life image reproduction and accurate data for celestial observation and analysis.

 

Filter Orientation Guide

The side that reflects like a mirror and shows no ghosting of objects should face the telescope, as shown in the left image.

The transparent side, where you can directly observe the inner edge of the glass and see ghosting of objects, should face the camera, as shown in the right image.

PURCHASE LINK: 

https://www.touptekastro.com/products/lrgb-2inch-filters

https://www.touptekastro.com/products/sho-2inch-filters

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