Used in great conditions, no scratches, fungus or other defects. This is a specialised CCD filter for astrophotography, tuned for light-suppression of city lights to enhance Nebulas and other faint deep-sky objects. A lot of information can be found on the web. This is a genuine item purchased new from a UK authorised reseller.
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DO NOT LOOK AT THE SUN WITH OPTOLONG FILTER. You would be BLIND if you fail to observe the warning. UHC with narrower passband provides higher contrast than CLS. Light pollution filter do not eliminate the effects of light pollution or increase the object’s brightness.
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Material:PET,Aluminum Foil. 【Portable and Easy to Use】: The thin film design makes it lightweight and easy to carry around. We'd like to settle any problem in a friendly manner. It's just take you 1 minute.
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Overview: Broadband filter series belongs to the astronomical filters to eliminate the harmful light city has obvious effect, Especially the artificial light that lights, lights, landscape lights and background for sky glow (SKYLIGHT) and (GLOWLIGHT) etc.. High contrast filter, improved contrast nebulae and stars, reproduce the rich details of the nebula. Specification: Model: UHC light damage suppression filter Size: standard 1.25 inch Material: optical glass Application: using the international standard thread, suitable for a variety of astronomical of the British standard, the back-end can be directly eyepiece screw, screw into. Package included: 1 * UHC Filter 1.25"
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Overview: Broadband filter series belongs to the astronomical filters to eliminate the harmful light city has obvious effect, Especially the artificial light that lights, lights, landscape lights and background for sky glow (SKYLIGHT) and (GLOWLIGHT) etc.. High contrast filter, improved contrast nebulae and stars, reproduce the rich details of the nebula. Specification: Model: UHC light damage suppression filter Size: standard 1.25 inch Material: optical glass Application: using the international standard thread, suitable for a variety of astronomical of the British standard, the back-end can be directly eyepiece screw, screw into. Package included: 1 * UHC Filter 1.25"
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It PETcoated aluminum foil film. 【Protect Eyes】To safely observe the sun without damaging your eyes. 【Difference】The main difference from the traditional Bard film is that the sun looks red via its, Via traditional Bard film looks like gray.
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UHC filters or light pollution reduction filters are designed to selectively reduce the transmission of certain wavelengths of light;especially those produced by artificial light. for Sky background is darker;and contrast of emission nebulae are noticeably improved;the perfect filter for viewing nebula from light polluted skies;or for boosting the contrast of nebula from dark for sky sites.
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