مرشح ZWO SII 7 نانومتر - 31 مم - SII7nmD31

I've been using this 31mm SII filter for a few weeks now, and the contrast it adds to my narrowband data is fantastic, really pulling out the finer details in the nebulae. The 7nm bandwidth is noticeably effective at blocking light pollution, even from my backyard setup.

The narrow 7nm bandwidth really cuts out light pollution in my suburban backyard, letting me capture cleaner SII data on the Veil Nebula than I ever thought possible. I've noticed a nice boost in contrast on fainter structures compared to my old 8nm filter.

I paired this with a monochrome camera and the narrow 7nm bandpass really cuts through light pollution on sulfur regions. The detail in the bubble nebula came out cleaner than I expected from my bortle 7 backyard.