1.25" O-III Narrowband Filter Optical Tube Mounting Made from the finest

Made from the finest

Camera: Canon 6D (modified) + WO SpaceCat 51

This filter allows nearly 100% transmission of O-III and H-beta radiation

It uses a modern Sony back-illuminated sensor

1.25" O-III Narrowband Filter Optical Tube Mounting Made from the finest1. 25" O III Narrowband Filter High Contrast for Nebula Observation Overview: The 1. 25" O III Narrowband Filter is specifically designed for enhancing the visibility of gas and planetary nebulae by isolating the two key oxygen lines, OIII (496nm and 501nm). This filter significantly improves contrast and makes faint nebulae more detectable, especially in dark skies, making it an essential tool for deep sky astrophotographers and visual observers