Lumicon 1.25インチ 夜間用水素アルファ（H-Alpha）フィルター - LF3085

The nebula details in my first test image were sharper than anything I've gotten before, and the narrowband filter really cuts through local light pollution. It's a pain to refocus each time I swap it in, but the results are absolutely worth the extra effort.

I was blown away by the contrast this filter added to the California Nebula—nebulosity that was invisible before suddenly popped right out. The 12nm bandwidth really cuts through light pollution without losing too much signal, which is exactly what I needed for my suburban backyard. It even threaded

First light with this filter on the Veil Nebula was incredible – the contrast on the faint hydrogen clouds was way better than my old broadband filter. I can already see details in my test frames that were invisible before. The build feels solid in the 1.25" barrel, too.