Optolong L-eNhance Light Pollution Dual Band Pass Imaging Filter - 2" Mounted

The L-eNhance filter is a dual-band pass filter which has been designed for DSLR (digital SLR), color CMOS and CCD cameras. This filter allows color cameras to image narrow band wavelengths even in bright, heavily light-polluted areas.

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.

L-eNhance provides an economical and practical solution for amateurs. It is a dual-narrowband pass filter which has been designed for DSLR (digital SLR), color CMOS and CCD cameras. The convenience and cost effectiveness of this filter allows 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.

Features

• H-Beta, Oxygen III, and H-Alpha emission lines passed at high transmission rate (avg. 90% or above)
• Engineered specifically for use with DSLR, CMOS, and CCD color cameras Superb signal and contrast for nebulosity in suburban and urban photography
• More than 150 layers coating on B270 glass
• Ion assisted deposition technology to make sure durability and resistance to scratching

L-eNhance Filter Spectrum Curve

According to the characteristics of celestial body emission lines and feature of light pollution span of spectrum, Optolong specially designed and optimized dual-narrowband L-eNhance filter in order to retain the prominent color of nebula RGB while blocking out most of light pollution.

Spectrum as shown below:

User Images