{"product_id":"player-one-uvenus-1-25-uv-pass-filter","title":"Player One Uvenus 1.25\" UV-Pass Filter","description":"\u003cp\u003e\u003cstrong\u003eOverview.\u003c\/strong\u003e The Player One Uvenus 1.25\" UV-Pass Filter is an E-series ultraviolet bandpass filter centered at 350nm. It transmits a 60nm ultraviolet band (approximately 320–380nm) while deeply blocking visible and infrared light, revealing the ultraviolet cloud structure of Venus that is otherwise hidden in visible-light imaging. The filter is built on a color optical glass substrate with an extensive multi-coating process and threads into standard 1.25\" mounts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWho It's For.\u003c\/strong\u003e This filter suits advanced planetary imagers using UV-sensitive monochrome cameras who want to capture the dynamic ultraviolet cloud markings and atmospheric rotation of Venus.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Design.\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e350nm UV band:\u003c\/strong\u003e a center wavelength of 350nm targets the ultraviolet band where Venus cloud contrast is strongest.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60nm passband:\u003c\/strong\u003e transmits roughly 320–380nm ultraviolet light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep multi-band blocking:\u003c\/strong\u003e OD5 across 200–700nm, OD4 across 700–1100nm, and OD3 across 1000–1500nm suppress visible and infrared leakage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrong UV throughput:\u003c\/strong\u003e approximately 80% peak transmittance for a photon-limited application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 1.25\" format:\u003c\/strong\u003e M28.5×0.6 cell fits common 1.25\" filter wheels, drawers, and nosepieces.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOptical\/Mechanical Design.\u003c\/strong\u003e The filter passes a 60nm ultraviolet band centered at 350nm (about 320–380nm) at approximately 80% peak transmittance, with blocking of OD5 across 200–700nm, OD4 across 700–1100nm, and OD3 across 1000–1500nm. The surface is figured to 1\/4 lambda, and an extensive multi-coating process (over 100 layers) is applied to a color optical glass substrate 1.85mm thick. The anodized cell uses M28.5×0.6 (1.25\") threads and measures 7.5mm overall (5mm body plus 2.5mm thread).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRecommended Uses.\u003c\/strong\u003e Ultraviolet imaging of Venus to record cloud-top markings and atmospheric super-rotation; UV-band planetary studies with UV-capable monochrome cameras and UV-transmitting optics.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCompatibility \u0026amp; Accessory Notes.\u003c\/strong\u003e The M28.5×0.6 cell fits standard 1.25\" filter wheels, drawers, and nosepieces. Effective results require a camera with usable ultraviolet sensitivity and optics that transmit at 350nm; standard coated refractor optics may attenuate UV, so reflectors or UV-capable systems are preferred.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGood to Know Before You Order.\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUV-capable optics:\u003c\/strong\u003e the telescope and any correctors must transmit ultraviolet at 350nm for the filter to perform.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera sensitivity:\u003c\/strong\u003e a monochrome camera with usable UV response is recommended.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping weight:\u003c\/strong\u003e a packaged weight is not published by the manufacturer; contact us if you need it before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFAQ.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e No. The filter threads into any standard 1.25\" filter wheel, drawer, or nosepiece and needs no adjustment once installed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does it show on Venus?\u003c\/strong\u003e At 350nm the filter reveals ultraviolet cloud markings and atmospheric structure on Venus that are invisible in ordinary visible-light imaging.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need special optics?\u003c\/strong\u003e Yes, ideally. The optical train must transmit ultraviolet at 350nm and the camera must have usable UV sensitivity for best results.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBottom Line.\u003c\/strong\u003e A deep-blocking 350nm UV-pass filter in the convenient 1.25\" format, the Player One Uvenus opens up ultraviolet cloud imaging of Venus for dedicated planetary imagers with UV-capable gear.\u003c\/p\u003e","brand":"Player One Astronomy","offers":[{"title":"Default Title","offer_id":53834293477487,"sku":"UV125E","price":208.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/UVneus-filter-1sss.png?v=1784239804","url":"https:\/\/ontariotelescope.com\/products\/player-one-uvenus-1-25-uv-pass-filter","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}