{"product_id":"optolong-2-quot-l-enhance-dual-narrowband-filter-designed-for-dslr-ccd-control-from-light-polluted-skies","title":"Optolong 2\" L-eNhance Dual Narrowband Filter Designed for DSLR CCD Control from Light Polluted Skies","description":"\u003cp\u003e\u003cb\u003eDescription:\u003c\/b\u003e\u003cbr\u003eThe 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.\u003cbr\u003e\u003cbr\u003eL-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.\u003cbr\u003e\u003cbr\u003eOptolong 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.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eL-eNhance Filter Spectrum Curve:\u003c\/b\u003e\u003cbr\u003eAccording 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.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSpectrum and Characteristics:\u003c\/b\u003e\u003cbr\u003e- Substrate: B270\u003cbr\u003e- Thickness: 1.85mm\u003cbr\u003e- Tpeak: T\u0026gt;90%\u003cbr\u003e- Blocking range: 300-1000nm\u003cbr\u003e- Blocking depth: light pollution line blocking \u0026gt;99.9%\u003cbr\u003e- Surface quality: 60\/40\u003cbr\u003e- Transmitted Wavefront RMS: λ\/4\u003cbr\u003e- Parallelism: 30s\u003cbr\u003e\u003cbr\u003e\u003cb\u003ePackage Included:\u003c\/b\u003e\u003cbr\u003e- 1 x Filter\u003cbr\u003e- 1 x Plastic Box\u003cbr\u003e\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":40828207104049,"sku":"82949","price":173.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0578\/4790\/6353\/files\/7078478676017_watermarked_0.jpg_0.png?v=1767762743","url":"https:\/\/www.thanksbuyer.com\/ja\/products\/optolong-2-quot-l-enhance-dual-narrowband-filter-designed-for-dslr-ccd-control-from-light-polluted-skies","provider":"Thanksbuyer Online,SDR Radio, Testers and Measurement devices, Astronomy products,  Audio Amplifer and Decoders","version":"1.0","type":"link"}