Certified by AAS (American Astronomical Society)
Note: This solar filter is suitable for SV503 102mm f/7、SV550 122mm f/7
Certified by AAS (American Astronomical Society)
Note: This solar filter is suitable for SV503 70mm f/6、SV503 80mm f/7、SV550 80mm f/6
Certified by AAS (American Astronomical Society)
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