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Optolong 1.25'' L-eNhance light-pollution filter [OPTO-L-ENHANCE-125]

OPTO-L-ENHANCE-125
$179.00 USD
5 in stock IN STOCK, usually ships within 48h or less directly from our Canadian warehouse
Optolong: About L-eNhance Filter
The relentless spread of urbanization and its associated light pollution have become a growing problem for all amateurs and astro photographers. 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.
L-eNhance provides an economical and practical solution 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 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.
Hydrogen is the largest, the most primitive, the simplest, and the oldest element in the universe. Scientists 
consider that Hydrogen amounts to more than 90% of visible substance in space. Our sun is 5 billion years old, 
but so far hydrogen is still the key matter of nuclear fusion. While the sulfur element does not have much 
scientific significance, so keeping H and O is meaning for exploration of life.
Therefore, we highlight H-a, H-b, O3 and O2, and reduce the signal of sulfur
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-band L-eNhance filter in order to retain the prominent color of nebula RGB while blocking out most of light pollution.
Package Details 
Silver cardboad box
Plastic PP box
Imported high pressure EVA case lining
Warm Prompt
About Color: Light, computer display and other reasons, pictures and objects may slightly chromatic aberratio (color fifference), please refer to the material item
About Coating: Interferential filter to change surface color depending upon light and movement. Please in kind prevail.
About Product Object: All of specifications change in order to  improve product quality. We ask your understand if any update informations publish delay.
About Product Overview: Please note that this series of filter as same as specifications, processing technic, test methods. It is only size difference.

About Optolong 1.25'' L-eNhance light-pollution filter [OPTO-L-ENHANCE-125]

Optolong: About L-eNhance Filter
The relentless spread of urbanization and its associated light pollution have become a growing problem for all amateurs and astro photographers. 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.

L-eNhance provides an economical and practical solution 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 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.

Hydrogen is the largest, the most primitive, the simplest, and the oldest element in the universe. Scientists 
consider that Hydrogen amounts to more than 90% of visible substance in space. Our sun is 5 billion years old, 
but so far hydrogen is still the key matter of nuclear fusion. While the sulfur element does not have much 
scientific significance, so keeping H and O is meaning for exploration of life.
Therefore, we highlight H-a, H-b, O3 and O2, and reduce the signal of sulfur

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-band L-eNhance filter in order to retain the prominent color of nebula RGB while blocking out most of light pollution.

Package Details 
Silver cardboad box
Plastic PP box
Imported high pressure EVA case lining

Warm Prompt
About Color: Light, computer display and other reasons, pictures and objects may slightly chromatic aberratio (color fifference), please refer to the material item

About Coating: Interferential filter to change surface color depending upon light and movement. Please in kind prevail.

About Product Object: All of specifications change in order to  improve product quality. We ask your understand if any update informations publish delay.

About Product Overview: Please note that this series of filter as same as specifications, processing technic, test methods. It is only size difference.

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


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