




🌠 Elevate your astrophotography game — capture the cosmos like never before!
The OPTOLONG 2-inch L-Quad Enhance Filter (L-QEF) is a professional-grade quad bandpass filter designed to suppress light pollution from artificial and natural sources. It delivers over 90% transmittance of key nebula emission lines, cuts near-infrared noise up to 1000nm, and reduces starbursts, resulting in higher contrast, richer colors, and clearer celestial details. Ideal for astrophotographers shooting under Bortle scale 1 to 7 conditions.
| Package Dimensions L x W x H | 7.6 x 7.4 x 2.2 centimetres |
| Package Weight | 0.04 Kilograms |
| Product Dimensions L x W x H | 5.1 x 5.1 x 0.1 centimetres |
| Brand | OPTOLONG |
| Part number | 11105 |
| Water Resistance Level | Not Water Resistant |
| Photo Filter Effect Type | light_pollution_suppression |
| Photo Filter Thread Size | 48 Metres |
| Guaranteed software updates until | unknown |
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