Thousand Oaks Nebular Filter 1.25" Lp-4 h-beta

Enhance your deep sky viewing with the latest in multi-layer coating technology. Over three years in development. Our filters transmit desired wave-lengths in a very steep slope vs. gentle transition slopes in competitive brands. This means better contrast and overall performance.

LP-4 Hydrogen Beta (Red Cell) For Horsehead, California nebula and other faint nebulae.