The Sloan Digital Sky Survey (SDSS) photometric system is the most widely used filter set in modern astronomy. Many observatories and researchers rely on it for accurate photometric measurements.

The Antlia Photometric Sloan filter set includes four precision filters. These cover the wavelength range from 400nmto the 1100nm sensitivity limit of silicon CCD cameras. This range ensures compatibility with most astronomical imaging systems.

Antlia uses Ion-Assisted Deposition (IAD) coating technology on double-sided polished substrates. This process guarantees durability, consistent performance, and high optical quality. These coatings maintain stability even in demanding observing conditions.

Each Antlia Sloan filter provides almost complete out-of-band light suppression. With an optical density (OD) of 5, these filters block unwanted wavelengths and minimise leakage. This results in higher contrast and precise photometric data.

Choose Antlia Sloan photometric filters for superior contrast, reliable performance, and accurate measurements in your astronomy research.

Application and Performance:

• Wider transmission windows capture fainter objects in less time, improving imaging efficiency.

• The Antlia Sloan griz’ filter set works with optical systems from f/15 to f/1.8, covering a wide range of focal ratios.

• Peak transmission exceeds 98% (with g’ filter guaranteed above 95%).

• Filter thickness matches industry standards to maintain parfocality across your filter set.

• Each filter receives its own individual coating—never cut from larger coated glass—ensuring uniform quality.

• Delivers a 1/4-wave propagated wavefront before coating, preserving optical precision.