3nm vs 7nm Dual-Band Filter: Same Target, Same Camera, Real Results

How does a 3nm duoband nebula compare to a 7nm filter? On paper, the 3nm lets through less than half the sky background, but it costs about twice as much. I put SVBONY's SV220 3nm and 7nm duoband filters on the same scope, camera, and target to see whether that difference shows up in the final stack.

5% off with exclusive discount code ABDURSV220 (valid until Nov 15, 2026). Use these links to buy:

SVBONY SV220 on Amazon US: https://www.amazon.com/dp/B0BRCYF29T?maas=maas_adg_B10A5ECF9DFB66D78985F821393FD786_afap_abs&ref_=aa_maas&tag=maas
SVBONY SV220 on Amazon Canada: https://www.amazon.ca/dp/B0BRCYF29T?maas=maas_adg_1678D2AB71271D344701F2D481C144DC_afap_abs&ref_=aa_maas&tag=maas
SVBONY SV220 on Amazon UK: https://www.amazon.co.uk/dp/B0BRNCM74M?maas=maas_adg_0FC437C0DFF243F2C8D690CB0023BD74_afap_abs&ref_=aa_maas&tag=maas

Download and compare my processed and raw images yourself: https://drive.google.com/drive/folders/1hAQyAWwEoHxEZxFw_FaaqyHXtipTDoGs?usp=sharing

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