Optolong L-Quad Enhance Filter 2"
Optolong L-Quad Enhance Filter 2"

Optolong

Optolong L-Quad Enhance Filter 2"

SKU: L-QEF


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  • $199.00

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  • L-Quad Enhance Filter is a quad bandpass light pollution suppression filter for colour cameras.
  • Better suppression of starbursts; Higher contrast and more details of the celestial bodies; Better colour saturation; Great performance on signal-to-noise ratio (SNR);
  • Near IR cut-off to 1000nm, reducing the effects of IR noise;
  • Good for night sky from Bortel 1 to Bortel 7 levels; 
  • Suitable for wide range of deep sky targets cover most nebulae, galaxies, star clusters, reflected and emitted line signals astronomical objects with higher contrast and rich details while maintaining excellent colour balance. 
  • L-QEF has more than 90% transmittance of the nebula emission lines at H-Beta/OIII/H-Alpha/SII, with cut-off depth from OD2 to OD4, thus providing a significant increase in resistance to light pollution. L-QEF is good for night sky from Bortel 1 to Bortel 7 levels; (Bortel 8, Bortel 9 environments shall not be recommended, kindly chose Optolong other narrow-band filters, 3nm, 7nm type of filters are available.);

Which to Choose?

  • L-Pro provides the broadest spectrum and most natural color. Suitable for imaging nebula and galaxy targets.
  • L-Quad similar to L-Pro, but more tailored for color astronomical cameras.
  • UHC is not as broad spectrum, less natural color, but will block more stray light and skyglow than the L-Pro. Best suited to nebula targets, not broad spectrum targets like galaxies or clusters.
  • L-Enhance is a narrow tri-band filter. Best suited to capturing dim nebula targets. Will decrease brightness of surrounding stars, allowing for more faint detail. 
  • L-eXtreme is a dual-narrow-band 7nm filter providing a tight spectrum in only H-Alpha and OIII. Suitable for deep sky imaging under light polluted skies, and delivering the richest nebula detail.
  • L-Ultimate is a dual-narrow-band filter, an enhanced version of the L-eXtreme with just a 3nm bandpass on both Ha and OIII.

If you plan to use the filter to image a wide range of targets, the L-Pro is the most versatile. The L-Ultimate will provide the most faint detail on emission nebula.

The L-Ultimate is different from the series of dual-narrowband L-eNhance and L-eXtreme in that L-Ultimate is a dual-3nm bandwidth filter that only passes through Ha and OIII emission lines. You will get a darker sky background, more contrast of the image and the suppression on stars. L-Ultimate has also been optimized in terms of halo performance, so that there is no obvious halo when shooting on a bright star object.

    Barcode: 6971991897068
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