TO H-Beta Nebular Filters
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For Horsehead, California nebula and other faint nebulae. 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.MANUFACTURED IN THE U.S. Available for 1.25" and 2" eyepieces. Cells are color coded.