Name：2-inch filter L-Quad Enhance Filer(2IN-L-Quad Enhance Filer)
Specifications：
Based on the characteristics of celestial target emission lines and light contaminated dye lines, the L-Quad EnhanceFilter can effectively reduce the impact of light pollution, suppress the background light of the target, and improve celestial photographyHigh precision double-sided polishing - ensuring substrate parallelism above 30 "and surface shape better than/4;
Pure water ultrasonic cleaning - using a 13 tank cleaning process, effectively removing impurities and dust on the surface of the substrate;
Ion source assisted coating - optimizing film density, firmness, and uniformity, effectively reducing temperature drift;
Rigorous quality inspection - each filter undergoes photometric spectral inspection and laser interferometer surface type inspection.
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