This filter transmits a bandwidth of 7nm centered at 672nm and significantly reduces other transmissions, including wavelengths responsible for light pollution.

Features

• High-quality glass material; the SVBONY filter is made with multi-layer Schott glass using ion-assisted deposition technology to ensure scratch resistance and stability at the central wavelength or CWL.
• Sturdy metal frame; The SVBONY filter cell is made with lightweight yet solid metal and is CNC machined, sandblasted, anodized black, and laser engraved.
• Standard 2-inch threading; The filter cell screws directly into the 2-inch barrel of your telescope eyepiece.

The SVBONY SII-CCD 2-inch filter is designed for astrophotography and allows you to enhance contrast when photographing deep sky objects. It stands out better against the background of the night sky, allowing you to see details that were not previously apparent.