Optolong L-Quad Enhance Filter

Versatile Quad-Bandpass Performance

Unlike many narrowband filters, the L-Quad Enhance captures signals from four key emission lines in a single exposure when paired with a color camera: H-beta, OIII, H-alpha, and SII. This maximizes the signal from a wide variety of targets, including both emission and reflection nebulae, as well as star clusters and galaxies. This broad coverage makes it an ideal all-around filter for photographers seeking to save time and simplify their setup while achieving stunning results.

L-Quad Enhance vs. L-Pro

The L-Quad Enhance represents an evolution of its popular predecessor, the L-Pro. While the L-Pro is an excellent light pollution filter, the L-QEF offers key improvements for superior performance:

• Better Color Balance – The L-QEF provides more naturally balanced color channels, reducing the strong green cast often seen with the L-Pro.
• Higher Contrast – It offers a visibly higher contrast and a more even background, making faint details stand out more clearly.
• Improved Star Performance – The L-QEF is better at handling bright stars, effectively suppressing halos and starbursts for a cleaner final image.
• Superior Infrared Blocking – The L-QEF filters infrared light more correctly, leading to less noise and a cleaner image.

UV and IR Blocking

The L-Quad Enhance filter's design includes a near-infrared (IR) cut-off up to 1000nm. This feature reduces IR noise and helps ensure that extraneous light from both ends of the visible spectrum does not interfere with the final image, simplifying your imaging workflow.