{"product_id":"used-optolong-l-enhance-filter-1-26","title":"Used Optolong L-eNhance Filter, 1.25\"","description":"\u003cp\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e: This is a used 1.25\" Optolong L-eNhance filter in excellent condition, with clean optics and unmarked body.  Comes in its original jewel case but does not have a box.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e(Any dust you see in the photos is removable - it seems that these filters develop an electrostatic charge such that the dust in the air is just attracted to the filter.)  \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003e  \u003c\/h5\u003e\n\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe relentless spread of urbanization and its associated light pollution have become a growing problem for all amateurs and astrophotographers. 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.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\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. \u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\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.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan\u003eL-eNhance Filter Spectrum Curve\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\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.\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich to Choose?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eL-Pro provides the broadest spectrum and most natural color. Suitable for imaging nebula and galaxy targets.\u003c\/li\u003e\n\u003cli\u003eUHC 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.\u003c\/li\u003e\n\u003cli\u003eL-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. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you plan to use the filter to image a wide range of targets, the L-Pro is the most versatile. The L-Enhance will provide the most faint detail on emission nebula, and the UHC is a budget option in the middle.\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003ch5\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable border=\"1\" style=\"width: 501px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 237px;\"\u003eSubstrate:\u003c\/td\u003e\n\u003ctd style=\"width: 252px;\"\u003eB270\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 237px;\"\u003eThickness:\u003c\/td\u003e\n\u003ctd style=\"width: 252px;\"\u003e1.85mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 237px;\"\u003eTpeak:\u003c\/td\u003e\n\u003ctd style=\"width: 252px;\"\u003eT\u0026gt;90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 237px;\"\u003eBlocking range:\u003c\/td\u003e\n\u003ctd style=\"width: 252px;\"\u003e300-1000nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 237px;\"\u003eBlocking depth:\u003c\/td\u003e\n\u003ctd style=\"width: 252px;\"\u003elight pollution line blocking \u0026gt;99%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 237px;\"\u003eSurface quality:\u003c\/td\u003e\n\u003ctd style=\"width: 252px;\"\u003e60\/40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 237px;\"\u003eTransmitted Wavefront RMS:\u003c\/td\u003e\n\u003ctd style=\"width: 252px;\"\u003e\u003cspan\u003eλ\/4\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 237px;\"\u003e\u003cspan\u003eParallelism (arcsec):\u003cbr\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 252px;\"\u003e30s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCoating Parameter\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNon-cemented optical substrate coating\u003c\/li\u003e\n\u003cli\u003eElectron-beam gun evaporation with Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL (central wavelength); no deviation affected by temperature change\u003c\/li\u003e\n\u003cli\u003ePlanetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFilter Cell\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUltra-thin filter cell minimizes vignetting by maximizing possible clear aperture (clear aperture is 26mm for 1.25”; 45mm for 2”)\u003c\/li\u003e\n\u003cli\u003eAerometal Material\u003c\/li\u003e\n\u003cli\u003ePrecise CNC Machining\u003c\/li\u003e\n\u003cli\u003eSand Blasting Process\u003c\/li\u003e\n\u003cli\u003eBlack Anodized Finish\u003c\/li\u003e\n\u003cli\u003eExtinction Treatment to Prevent Reflection\u003c\/li\u003e\n\u003cli\u003eLaser Engraving No Fading\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePlastic PP Case\u003c\/li\u003e\n\u003cli\u003eImported High Pressure EVA Case Lining\u003c\/li\u003e\n\u003cli\u003eSilver Cardboard Box\u003c\/li\u003e\n\u003cli\u003eHigh Density Sponge Carton Lining\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSizes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStandard 1.25”\u003c\/li\u003e\n\u003cli\u003eStandard 2”\u003c\/li\u003e\n\u003cli\u003eCanon APS-C Clip Filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAPS-C Clip filter is tested and compatible with the following camera models: 7D2\/80D\/800D\/77D\/70D\/760D\/750D\/700D 650D\/600D\/550D\/500D\/400D\/100D\/1100D 1200D\/1300D\u003c\/p\u003e\n\u003cp\u003eClip filters are compatible with EF lenses, but not EF-S lenses.\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":49453016056067,"sku":"U2608-MS-L-eN-1","price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1979\/5379\/files\/896e057d-fcc4-4d48-a689-61724d3928e1.jpg?v=1786827719","url":"https:\/\/milehighastro.com\/products\/used-optolong-l-enhance-filter-1-26","provider":"Mile High Astronomy","version":"1.0","type":"link"}