- Optolong Light Pollution Suppression Filter
- The bandwidths are 24nm for OIII and H-beta, 10nm for H-a
- Isolates H-alpha, H-beta, and Oxygen III Nebula Emission Lines
- Maximum Transmission of up to 90%
Optolong's Light Pollution Suppression Filter, the L-eNhance Filter - 1.25-Inch
About L-eNhance Filter
The relentless spread of urbanization and its associated light pollution have become a growing problem for all amateurs and astrophotographers. The current fixes to the problem can be expensive and might include the purchase of a monochrome camera, several types of narrowband filters and a filter wheel.
L-eNhance provides an economical and practical suppression filter for amateurs. It is a dual-band 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 their 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-percent. The performance of this filter delivers images that superbly control the impact from light polluted skies.
L-eNhance Filter Spectrum Curve
The bandwidths:
=24nm for OIII and H-beta
=10nm for Ha
Optolong specially designed and optimized their dual-band L-eNhance filter according to the characteristics of celestial body emission lines and features of the light pollution spectrum span. This retains the prominent color of nebula RGB while blocking out most of the light pollution.
Substrate: | B270 |
Thickness: | 1.85mm |
Tpeak: | T>90% |
Blocking range: | 300 to 1000nm |
Blocking depth: | light pollutionline blocking >99% |
Surface quality: | 60/40 |
Transmitted Wavefront RMS: | λ/4 |
Parallelism (arcsec): |
30s |
Compare the L-eNhance, L-eXtreme, and L-Pro filters:
Manufacturer's Notes:
The colors in these images may vary slightly to the final product due to continued development and the display colors for monitors.
Coating: This Interference filter may change surface color depending upon light and movement.
Product: All of these specifications may change in order toimprove product quality. They ask your understanding if any updated information is delayed on publishing.
Product Series: Please note that this series of filters will have the same specifications, processing techniques, and test methods. They will only have size differences. - Shown is a 2-inch filter -
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included items
Package Details
- Silver cardboard box
- Plastic PP box
- Imported high pressure EVA case lining
- Applicazione filtro
- Fotografico
- Tipo di filtro
- Narrowband*~Inquinamento luminoso
- Filter size
- 1¼ inch (31,75mm)