Optolong L-eNhance Light Pollution Filter - EOS APS-C Clip Filter

The relentless spread of urbanization and its associated light pollution have become a growing problem for all amateur astrophotographers. The current solutions to the problem can be expensive and might include the purchase of a monochrome camera, several types of narrowband filters, and a filter wheel.

Optolong L-eNhance provides an economical and practical solution for amateurs. It is a dual-band pass filter that has been designed for DSLR (digital SLR), color CMOS and monochrome CCD cameras. The convenience and cost-effectiveness of this filter allow amateurs to image a rich selection of astronomical images, even in bright, heavily light-polluted areas. Optolong believes the design of our L-eNhance filter is a technical innovation among filters. It effectively isolates the H-alpha, H-Beta, and Oxygen III nebula emission lines and achieves a maximum transmission of up to 90%. The performance of this filter delivers images that superbly control the impact from light polluted skies.

• Substrate: B270
• Thickness: 1.85mm
• T-peak: T>90%
• Blocking range: 300-1000nm
• Blocking depth: light pollution line blocking >99%
• Surface quality: 60/40
• Transmitted Wavefront RMS: λ/4
• Parallelism: 30s

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