{"title":"Player One Narrowband Filters","description":"\u003cp\u003eEvery Player One Astronomy narrowband filter we carry, sized for Player One mono cameras and Phoenix filter wheels. Part of \u003ca href=\"\/collections\/narrowband-filters\"\u003eNarrowband Filters\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"photosphere-7-5nm-1-25-filter-e-series","title":"Photosphere 7.5nm 1.25″ Filter E-series","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Player One Astronomy Photosphere 7.5nm 1.25″ E-series filter isolates a narrow 7.5 nm slice of green light centred on 540 nm to lift the contrast of the Sun's visible surface. Working in this continuum band makes sunspots, faculae, and granulation stand out more crisply than a broadband white-light view, giving your solar images cleaner photospheric structure. It transmits about 97% in-band while blocking out-of-band light to OD4.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis filter is for white-light solar imagers who already view the Sun safely and want more contrast on the photosphere. If you photograph sunspot groups and granulation and want to sharpen that detail, the Photosphere 540 nm continuum filter is made for the job.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e540 nm continuum band:\u003c\/strong\u003e centres on green light where photospheric contrast is high, making sunspots and granulation pop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrow 7.5 nm bandwidth:\u003c\/strong\u003e restricts the passband to a slim window for cleaner, higher-contrast detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e≈97% in-band transmission:\u003c\/strong\u003e keeps the solar surface bright for short, sharp exposures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOD4 out-of-band blocking:\u003c\/strong\u003e suppresses light outside the passband to preserve contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePV 1\/4λ wavefront:\u003c\/strong\u003e figured to a quarter-wave to protect resolution through the imaging train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25″ thread (M28.5×0.6):\u003c\/strong\u003e fits standard 1.25-inch cells, drawers, and wheels.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical\/Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Photosphere filter passes a 7.5 nm-wide (FWHM) band centred on 540 nm at about 97% transmittance, while rejecting out-of-band light to optical density 4 (OD4). Restricting the view to this green continuum window raises the visible contrast of photospheric features because sunspot umbrae, penumbrae, and granulation modulate strongly there; narrowing the band trims the surrounding light that would otherwise wash the detail out. The 1.85 mm-thick optical-glass substrate carries a multi-layer composite coating and is figured to a PV 1\/4 wavelength wavefront. Mechanically it uses the 1.25-inch M28.5×0.6 thread with a 5 mm body plus 2.5 mm thread section (7.5 mm total).\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHigh-contrast white-light imaging of sunspots and granulation.\u003c\/li\u003e\n\u003cli\u003eContinuum-band solar photography where a broadband view looks flat.\u003c\/li\u003e\n\u003cli\u003e1.25-inch solar imaging trains that already include safe aperture-side solar filtration.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility \u0026amp; Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit:\u003c\/strong\u003e 1.25″ M28.5×0.6 filter thread — works in 1.25-inch cells, drawers, and filter wheels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar setup:\u003c\/strong\u003e used within a properly filtered white-light train (for example behind a safe aperture solar film or a Herschel wedge), not on its own.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackfocus:\u003c\/strong\u003e the 7.5 mm cell and 1.85 mm glass add to your optical path; include them in your spacing calculation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eThis is a contrast-enhancing continuum filter, not a solar safety filter; the Sun must already be made safe to view by an approved aperture or wedge filter ahead of it.\u003c\/li\u003e\n\u003cli\u003ePlayer One does not publish a bandwidth tolerance or a net weight for this filter; the shipping weight shown at checkout is an estimate. Contact us if you need exact figures.\u003c\/li\u003e\n\u003cli\u003eInserting the filter shifts focus slightly, so refocus after fitting it.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e No. It threads into a standard 1.25-inch cell, drawer, or wheel within your existing safe white-light train and needs no power; refocus once after fitting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does a 540 nm photosphere filter do?\u003c\/strong\u003e It confines the view to a narrow green continuum band where photospheric contrast is highest, so sunspots and granulation appear sharper than in a broadband white-light image.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a solar safety filter?\u003c\/strong\u003e No. It enhances contrast only; a safe aperture or Herschel-wedge solar filter must already be in place to make the Sun safe to view and image.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy the narrow 7.5 nm band?\u003c\/strong\u003e A slim passband trims surrounding light that would otherwise reduce contrast, letting fine surface structure show more clearly.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Photosphere 7.5nm 1.25″ E-series filter sharpens white-light solar detail by isolating a 7.5 nm continuum band at 540 nm with ~97% transmission and OD4 blocking, bringing out sunspots and granulation in your images.\u003c\/p\u003e","brand":"Player One Astronomy","offers":[{"title":"Default Title","offer_id":44013787545711,"sku":"POA-PS125E","price":138.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/PS125E-filter-logo__10151.png?v=1766562683"},{"product_id":"player-one-1-25-ha-7nm-narrowband-filter","title":"Player One 1.25\" Ha 7nm Narrowband Filter","description":"\u003cp\u003e\u003cstrong\u003eOverview.\u003c\/strong\u003e The Player One 1.25\" Ha 7nm Narrowband Filter is an S-series hydrogen-alpha (Hα) emission-line filter for monochrome deep-sky astrophotography. It transmits a narrow 7nm ±0.5nm band centered on the hydrogen-alpha emission of nebulae while blocking the rest of the spectrum, so faint emission structure is recorded with high contrast even under moderate light pollution. The filter is built on a high-quality optical glass substrate with a multi-layer composite coating and threads into standard 1.25\" filter mounts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWho It's For.\u003c\/strong\u003e This filter suits imagers using cooled or uncooled monochrome cameras who want to capture emission nebulae, isolate the Hα channel of an SHO (Hubble-palette) dataset, or extend imaging into moonlit and light-polluted nights.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Design.\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrow 7nm passband:\u003c\/strong\u003e a 7nm ±0.5nm FWHM isolates the hydrogen-alpha line and rejects most skyglow and broadband light pollution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep blocking:\u003c\/strong\u003e OD3 blocking (less than 0.1% transmission off-band) with NIR cutoff across 700–1100nm suppresses stray and out-of-band light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh in-band throughput:\u003c\/strong\u003e approximately 90% peak transmittance preserves signal on faint targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-layer composite coating:\u003c\/strong\u003e applied to a high-quality optical glass substrate for durability and consistent response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 1.25\" format:\u003c\/strong\u003e M28.5×0.6 cell threads fit common 1.25\" filter wheels, drawers, and threaded accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOptical\/Mechanical Design.\u003c\/strong\u003e The filter passes a 7nm ±0.5nm FWHM band on the hydrogen-alpha emission line and holds OD3 off-band blocking (\u0026lt;0.1% transmission) with the near-infrared blocked from 700–1100nm. Peak in-band transmittance is about 90%. Both surfaces are polished to 1\/4 lambda surface accuracy on a 2.0 ±0.03 mm optical glass substrate carrying a multi-layer composite coating. 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 Narrowband imaging of emission nebulae, supernova remnants, and HII regions; the Hα channel in bicolor (HOO) and tricolor (SHO) narrowband processing; and continued deep-sky capture during bright-moon or light-polluted conditions.\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, filter drawers, and 1.25\" nosepieces and eyepiece-thread accessories. It pairs naturally with matching Player One 1.25\" OIII 7nm and SII 7nm filters for a complete SHO set. Narrowband filters are intended for monochrome imaging cameras; on one-shot-color sensors the effective throughput is reduced.\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\u003eIndividual center wavelength:\u003c\/strong\u003e Player One does not publish a numeric center wavelength for this line on the product page, so it is not stated here.\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\u003cli\u003e\n\u003cstrong\u003eCamera type:\u003c\/strong\u003e narrowband results are strongest with monochrome cameras.\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 requires no adjustment once installed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it help under light pollution?\u003c\/strong\u003e Yes. The 7nm passband rejects most broadband skyglow, so Hα emission is recorded with strong contrast even from suburban skies.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it with a color camera?\u003c\/strong\u003e It is designed for monochrome cameras; a one-shot-color sensor will still pass the band but with reduced efficiency.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBottom Line.\u003c\/strong\u003e A well-coated 7nm hydrogen-alpha filter in the convenient 1.25\" format, the Player One 1.25\" Ha 7nm delivers high-contrast emission-line imaging and forms the Hα channel of a full narrowband set.\u003c\/p\u003e","brand":"Player One Astronomy","offers":[{"title":"Default Title","offer_id":53834272505967,"sku":"HA7-125","price":180.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/HSO125-SET-600x600.jpg?v=1784239444"},{"product_id":"player-one-1-25-oiii-7nm-narrowband-filter","title":"Player One 1.25\" OIII 7nm Narrowband Filter","description":"\u003cp\u003e\u003cstrong\u003eOverview.\u003c\/strong\u003e The Player One 1.25\" OIII 7nm Narrowband Filter is an S-series doubly-ionized oxygen (OIII) emission-line filter for monochrome deep-sky astrophotography. It transmits a narrow 7nm ±0.5nm band on the OIII emission of planetary and emission nebulae while rejecting the rest of the spectrum, capturing the characteristic teal-blue oxygen structure with high contrast even under moderate light pollution. The filter uses a high-quality optical glass substrate with a multi-layer composite coating and threads into standard 1.25\" filter mounts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWho It's For.\u003c\/strong\u003e This filter suits imagers using monochrome cameras who want to record the OIII channel of emission and planetary nebulae, build SHO or HOO narrowband palettes, or continue imaging on moonlit and light-polluted nights.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Design.\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrow 7nm passband:\u003c\/strong\u003e a 7nm ±0.5nm FWHM isolates the OIII emission and rejects most skyglow and broadband light pollution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep blocking:\u003c\/strong\u003e OD3 blocking (less than 0.1% off-band transmission) with NIR cutoff across 700–1100nm suppresses stray light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh in-band throughput:\u003c\/strong\u003e approximately 90% peak transmittance preserves faint oxygen signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-layer composite coating:\u003c\/strong\u003e on a high-quality optical glass substrate for consistent response.\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 and drawers.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOptical\/Mechanical Design.\u003c\/strong\u003e The filter passes a 7nm ±0.5nm FWHM band on the OIII emission line and holds OD3 off-band blocking (\u0026lt;0.1% transmission) with the near-infrared blocked from 700–1100nm. Peak in-band transmittance is about 90%. Both surfaces are polished to 1\/4 lambda surface accuracy on a 2.0 ±0.03 mm optical glass substrate carrying a multi-layer composite coating. 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 Narrowband imaging of planetary nebulae, supernova remnants, and emission nebulae; the OIII channel in bicolor (HOO) and tricolor (SHO) narrowband processing; and deep-sky capture during bright-moon or light-polluted conditions.\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 1.25\" nosepieces. It pairs with matching Player One 1.25\" Ha 7nm and SII 7nm filters for a complete SHO set. Narrowband filters are intended for monochrome imaging cameras; on one-shot-color sensors the effective throughput is reduced.\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\u003eIndividual center wavelength:\u003c\/strong\u003e Player One does not publish a numeric center wavelength for this line on the product page, so it is not stated here.\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\u003cli\u003e\n\u003cstrong\u003eCamera type:\u003c\/strong\u003e narrowband results are strongest with monochrome cameras.\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\u003eWill it help under light pollution?\u003c\/strong\u003e Yes. The 7nm passband rejects most broadband skyglow, so OIII emission is recorded with strong contrast even from suburban skies.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it with a color camera?\u003c\/strong\u003e It is designed for monochrome cameras; a one-shot-color sensor will pass the band but with reduced efficiency.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBottom Line.\u003c\/strong\u003e A well-coated 7nm OIII filter in the convenient 1.25\" format, the Player One 1.25\" OIII 7nm captures high-contrast oxygen-line detail and forms the OIII channel of a full narrowband set.\u003c\/p\u003e","brand":"Player One Astronomy","offers":[{"title":"Default Title","offer_id":53834272702575,"sku":"OIII7-125","price":180.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/HSO125-SET-600x600_bc2491c7-42a5-449c-bc4b-bf788699c06d.jpg?v=1784239520"},{"product_id":"player-one-1-25-sii-7nm-narrowband-filter","title":"Player One 1.25\" SII 7nm Narrowband Filter","description":"\u003cp\u003e\u003cstrong\u003eOverview.\u003c\/strong\u003e The Player One 1.25\" SII 7nm Narrowband Filter is an S-series singly-ionized sulfur (SII) emission-line filter for monochrome deep-sky astrophotography. It transmits a narrow 7nm ±0.5nm band on the SII emission of nebulae while rejecting the rest of the spectrum, recording the sulfur channel used in Hubble-palette imaging with high contrast even under moderate light pollution. The filter uses a high-quality optical glass substrate with a multi-layer composite coating and threads into standard 1.25\" filter mounts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWho It's For.\u003c\/strong\u003e This filter suits imagers using monochrome cameras who want to capture the SII channel of emission nebulae and complete a tricolor (SHO) narrowband dataset, or continue imaging on moonlit and light-polluted nights.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Design.\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrow 7nm passband:\u003c\/strong\u003e a 7nm ±0.5nm FWHM isolates the SII emission and rejects most skyglow and broadband light pollution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep blocking:\u003c\/strong\u003e OD3 blocking (less than 0.1% off-band transmission) with NIR cutoff across 700–1100nm suppresses stray light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh in-band throughput:\u003c\/strong\u003e approximately 90% peak transmittance preserves faint sulfur signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-layer composite coating:\u003c\/strong\u003e on a high-quality optical glass substrate for consistent response.\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 and drawers.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOptical\/Mechanical Design.\u003c\/strong\u003e The filter passes a 7nm ±0.5nm FWHM band on the SII emission line and holds OD3 off-band blocking (\u0026lt;0.1% transmission) with the near-infrared blocked from 700–1100nm. Peak in-band transmittance is about 90%. Both surfaces are polished to 1\/4 lambda surface accuracy on a 2.0 ±0.03 mm optical glass substrate carrying a multi-layer composite coating. 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 Narrowband imaging of emission nebulae, HII regions, and supernova remnants; the SII channel in tricolor (SHO) Hubble-palette processing; and deep-sky capture during bright-moon or light-polluted conditions.\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 1.25\" nosepieces. It pairs with matching Player One 1.25\" Ha 7nm and OIII 7nm filters for a complete SHO set. Narrowband filters are intended for monochrome imaging cameras; on one-shot-color sensors the effective throughput is reduced.\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\u003eIndividual center wavelength:\u003c\/strong\u003e Player One does not publish a numeric center wavelength for this line on the product page, so it is not stated here.\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\u003cli\u003e\n\u003cstrong\u003eCamera type:\u003c\/strong\u003e narrowband results are strongest with monochrome cameras.\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\u003eWill it help under light pollution?\u003c\/strong\u003e Yes. The 7nm passband rejects most broadband skyglow, so SII emission is recorded with strong contrast even from suburban skies.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it with a color camera?\u003c\/strong\u003e It is designed for monochrome cameras; a one-shot-color sensor will pass the band but with reduced efficiency.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBottom Line.\u003c\/strong\u003e A well-coated 7nm SII filter in the convenient 1.25\" format, the Player One 1.25\" SII 7nm records high-contrast sulfur-line detail and completes the SHO narrowband set.\u003c\/p\u003e","brand":"Player One Astronomy","offers":[{"title":"Default Title","offer_id":53834274078831,"sku":"SII7-125","price":180.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/HSO125-SET-600x600_e78520a6-0066-4dc4-abd4-b1879ec5b7cd.jpg?v=1784239555"},{"product_id":"player-one-2-ha-7nm-narrowband-filter","title":"Player One 2\" Ha 7nm Narrowband Filter","description":"\u003cp\u003e\u003cstrong\u003eOverview.\u003c\/strong\u003e The Player One 2\" Ha 7nm Narrowband Filter is an S-series hydrogen-alpha (Hα) emission-line filter for monochrome deep-sky astrophotography with larger sensors and fast optics. It transmits a narrow 7nm ±0.5nm band centered on the hydrogen-alpha emission of nebulae while blocking the rest of the spectrum, so faint emission structure is recorded with high contrast even under moderate light pollution. The 2\" format provides full illumination for larger imaging circles. The filter is built on a high-quality optical glass substrate with a multi-layer composite coating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWho It's For.\u003c\/strong\u003e This filter suits imagers running larger-sensor monochrome cameras and 2\" filter systems who want to capture emission nebulae, isolate the Hα channel of an SHO dataset, or image through moonlight and light pollution without vignetting the field.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Design.\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrow 7nm passband:\u003c\/strong\u003e a 7nm ±0.5nm FWHM isolates the hydrogen-alpha line and rejects most skyglow and broadband light pollution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep blocking:\u003c\/strong\u003e OD3 blocking (less than 0.1% off-band transmission) with NIR cutoff across 700–1100nm suppresses stray light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh in-band throughput:\u003c\/strong\u003e approximately 90% peak transmittance preserves signal on faint targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2\" clear aperture:\u003c\/strong\u003e the larger format supports bigger sensors and fast focal ratios with even illumination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-layer composite coating:\u003c\/strong\u003e on a high-quality optical glass substrate for durable, consistent response.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOptical\/Mechanical Design.\u003c\/strong\u003e The filter passes a 7nm ±0.5nm FWHM band on the hydrogen-alpha emission line and holds OD3 off-band blocking (\u0026lt;0.1% transmission) with the near-infrared blocked from 700–1100nm. Peak in-band transmittance is about 90%. Both surfaces are polished to 1\/4 lambda surface accuracy on a 2.0 ±0.03 mm optical glass substrate carrying a multi-layer composite coating. The anodized cell uses M48×0.75 (2\") threads and measures 7.5mm overall (5mm body plus 2.5mm thread).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRecommended Uses.\u003c\/strong\u003e Narrowband imaging of emission nebulae, supernova remnants, and HII regions with larger sensors; the Hα channel in bicolor (HOO) and tricolor (SHO) narrowband processing; and deep-sky capture during bright-moon or light-polluted conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCompatibility \u0026amp; Accessory Notes.\u003c\/strong\u003e The M48×0.75 cell fits standard 2\" filter wheels, drawers, and 2\" threaded accessories. It pairs with matching Player One 2\" OIII 7nm and SII 7nm filters for a complete SHO set. Narrowband filters are intended for monochrome imaging cameras; on one-shot-color sensors the effective throughput is reduced.\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\u003eIndividual center wavelength:\u003c\/strong\u003e Player One does not publish a numeric center wavelength for this line on the product page, so it is not stated here.\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\u003cli\u003e\n\u003cstrong\u003eCamera type:\u003c\/strong\u003e narrowband results are strongest with monochrome cameras.\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 2\" filter wheel, drawer, or threaded holder and needs no adjustment once installed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it help under light pollution?\u003c\/strong\u003e Yes. The 7nm passband rejects most broadband skyglow, so Hα emission is recorded with strong contrast even from suburban skies.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy choose 2\" over 1.25\"?\u003c\/strong\u003e The larger 2\" format fully illuminates bigger sensors and fast optics without vignetting the corners of the field.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBottom Line.\u003c\/strong\u003e A well-coated 7nm hydrogen-alpha filter in the larger 2\" format, the Player One 2\" Ha 7nm delivers high-contrast emission-line imaging across bigger sensors and forms the Hα channel of a full narrowband set.\u003c\/p\u003e","brand":"Player One Astronomy","offers":[{"title":"Default Title","offer_id":53834274308207,"sku":"HA7-2","price":348.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/HSO2-SET-600x600.jpg?v=1784239589"},{"product_id":"player-one-2-oiii-7nm-narrowband-filter","title":"Player One 2\" OIII 7nm Narrowband Filter","description":"\u003cp\u003e\u003cstrong\u003eOverview.\u003c\/strong\u003e The Player One 2\" OIII 7nm Narrowband Filter is an S-series doubly-ionized oxygen (OIII) emission-line filter for monochrome deep-sky astrophotography with larger sensors and fast optics. It transmits a narrow 7nm ±0.5nm band on the OIII emission of planetary and emission nebulae while rejecting the rest of the spectrum, capturing the characteristic teal-blue oxygen structure with high contrast even under moderate light pollution. The 2\" format provides full illumination for larger imaging circles. The filter uses a high-quality optical glass substrate with a multi-layer composite coating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWho It's For.\u003c\/strong\u003e This filter suits imagers running larger-sensor monochrome cameras and 2\" filter systems who want to record the OIII channel of emission and planetary nebulae, build SHO or HOO palettes, or image through moonlight and light pollution without vignetting the field.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Design.\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrow 7nm passband:\u003c\/strong\u003e a 7nm ±0.5nm FWHM isolates the OIII emission and rejects most skyglow and broadband light pollution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep blocking:\u003c\/strong\u003e OD3 blocking (less than 0.1% off-band transmission) with NIR cutoff across 700–1100nm suppresses stray light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh in-band throughput:\u003c\/strong\u003e approximately 90% peak transmittance preserves faint oxygen signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2\" clear aperture:\u003c\/strong\u003e the larger format supports bigger sensors and fast focal ratios with even illumination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-layer composite coating:\u003c\/strong\u003e on a high-quality optical glass substrate for consistent response.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOptical\/Mechanical Design.\u003c\/strong\u003e The filter passes a 7nm ±0.5nm FWHM band on the OIII emission line and holds OD3 off-band blocking (\u0026lt;0.1% transmission) with the near-infrared blocked from 700–1100nm. Peak in-band transmittance is about 90%. Both surfaces are polished to 1\/4 lambda surface accuracy on a 2.0 ±0.03 mm optical glass substrate carrying a multi-layer composite coating. The anodized cell uses M48×0.75 (2\") threads and measures 7.5mm overall (5mm body plus 2.5mm thread).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRecommended Uses.\u003c\/strong\u003e Narrowband imaging of planetary nebulae, supernova remnants, and emission nebulae with larger sensors; the OIII channel in bicolor (HOO) and tricolor (SHO) narrowband processing; and deep-sky capture during bright-moon or light-polluted conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCompatibility \u0026amp; Accessory Notes.\u003c\/strong\u003e The M48×0.75 cell fits standard 2\" filter wheels, drawers, and threaded accessories. It pairs with matching Player One 2\" Ha 7nm and SII 7nm filters for a complete SHO set. Narrowband filters are intended for monochrome imaging cameras; on one-shot-color sensors the effective throughput is reduced.\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\u003eIndividual center wavelength:\u003c\/strong\u003e Player One does not publish a numeric center wavelength for this line on the product page, so it is not stated here.\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\u003cli\u003e\n\u003cstrong\u003eCamera type:\u003c\/strong\u003e narrowband results are strongest with monochrome cameras.\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 2\" filter wheel, drawer, or threaded holder and needs no adjustment once installed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it help under light pollution?\u003c\/strong\u003e Yes. The 7nm passband rejects most broadband skyglow, so OIII emission is recorded with strong contrast even from suburban skies.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy choose 2\" over 1.25\"?\u003c\/strong\u003e The larger 2\" format fully illuminates bigger sensors and fast optics without vignetting the corners of the field.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBottom Line.\u003c\/strong\u003e A well-coated 7nm OIII filter in the larger 2\" format, the Player One 2\" OIII 7nm captures high-contrast oxygen-line detail across bigger sensors and forms the OIII channel of a full narrowband set.\u003c\/p\u003e","brand":"Player One Astronomy","offers":[{"title":"Default Title","offer_id":53834280796271,"sku":"OIII7-2","price":348.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/HSO2-SET-600x600_f7b2ae40-5f42-4ab9-89df-375ee0fba5f6.jpg?v=1784239654"},{"product_id":"player-one-2-sii-7nm-narrowband-filter","title":"Player One 2\" SII 7nm Narrowband Filter","description":"\u003cp\u003e\u003cstrong\u003eOverview.\u003c\/strong\u003e The Player One 2\" SII 7nm Narrowband Filter is an S-series singly-ionized sulfur (SII) emission-line filter for monochrome deep-sky astrophotography with larger sensors and fast optics. It transmits a narrow 7nm ±0.5nm band on the SII emission of nebulae while rejecting the rest of the spectrum, recording the sulfur channel used in Hubble-palette imaging with high contrast even under moderate light pollution. The 2\" format provides full illumination for larger imaging circles. The filter uses a high-quality optical glass substrate with a multi-layer composite coating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWho It's For.\u003c\/strong\u003e This filter suits imagers running larger-sensor monochrome cameras and 2\" filter systems who want to capture the SII channel of emission nebulae and complete a tricolor (SHO) narrowband dataset, or image through moonlight and light pollution without vignetting the field.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Design.\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrow 7nm passband:\u003c\/strong\u003e a 7nm ±0.5nm FWHM isolates the SII emission and rejects most skyglow and broadband light pollution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep blocking:\u003c\/strong\u003e OD3 blocking (less than 0.1% off-band transmission) with NIR cutoff across 700–1100nm suppresses stray light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh in-band throughput:\u003c\/strong\u003e approximately 90% peak transmittance preserves faint sulfur signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2\" clear aperture:\u003c\/strong\u003e the larger format supports bigger sensors and fast focal ratios with even illumination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-layer composite coating:\u003c\/strong\u003e on a high-quality optical glass substrate for consistent response.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOptical\/Mechanical Design.\u003c\/strong\u003e The filter passes a 7nm ±0.5nm FWHM band on the SII emission line and holds OD3 off-band blocking (\u0026lt;0.1% transmission) with the near-infrared blocked from 700–1100nm. Peak in-band transmittance is about 90%. Both surfaces are polished to 1\/4 lambda surface accuracy on a 2.0 ±0.03 mm optical glass substrate carrying a multi-layer composite coating. The anodized cell uses M48×0.75 (2\") threads and measures 7.5mm overall (5mm body plus 2.5mm thread).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRecommended Uses.\u003c\/strong\u003e Narrowband imaging of emission nebulae, HII regions, and supernova remnants with larger sensors; the SII channel in tricolor (SHO) Hubble-palette processing; and deep-sky capture during bright-moon or light-polluted conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCompatibility \u0026amp; Accessory Notes.\u003c\/strong\u003e The M48×0.75 cell fits standard 2\" filter wheels, drawers, and threaded accessories. It pairs with matching Player One 2\" Ha 7nm and OIII 7nm filters for a complete SHO set. Narrowband filters are intended for monochrome imaging cameras; on one-shot-color sensors the effective throughput is reduced.\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\u003eIndividual center wavelength:\u003c\/strong\u003e Player One does not publish a numeric center wavelength for this line on the product page, so it is not stated here.\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\u003cli\u003e\n\u003cstrong\u003eCamera type:\u003c\/strong\u003e narrowband results are strongest with monochrome cameras.\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 2\" filter wheel, drawer, or threaded holder and needs no adjustment once installed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it help under light pollution?\u003c\/strong\u003e Yes. The 7nm passband rejects most broadband skyglow, so SII emission is recorded with strong contrast even from suburban skies.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy choose 2\" over 1.25\"?\u003c\/strong\u003e The larger 2\" format fully illuminates bigger sensors and fast optics without vignetting the corners of the field.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBottom Line.\u003c\/strong\u003e A well-coated 7nm SII filter in the larger 2\" format, the Player One 2\" SII 7nm records high-contrast sulfur-line detail across bigger sensors and completes the SHO narrowband set.\u003c\/p\u003e","brand":"Player One Astronomy","offers":[{"title":"Default Title","offer_id":53834289217647,"sku":"SII7-2","price":348.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/HSO2-SET-600x600_9745cba6-aabb-4349-8290-b4e818f9af0d.jpg?v=1784239685"},{"product_id":"player-one-ch4-8nm-1-25-methane-band-filter","title":"Player One CH4 8nm 1.25\" Methane Band Filter","description":"\u003cp\u003e\u003cstrong\u003eOverview.\u003c\/strong\u003e The Player One CH4 8nm 1.25\" Methane Band Filter is an E-series bandpass filter centered on the 889nm methane absorption band. It isolates the wavelength at which methane in gas-giant atmospheres absorbs strongly, revealing high-altitude cloud and haze structure on Jupiter, Saturn, Uranus, and Neptune that is invisible in ordinary visible-light imaging. The filter is built on a high-quality optical glass substrate with a multi-layer composite coating 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 sensitive monochrome cameras who want to capture methane-band detail on the giant planets, and researchers or enthusiasts studying atmospheric banding and storm structure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Design.\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e889nm methane band:\u003c\/strong\u003e a center wavelength of 889nm targets the deep methane absorption feature of gas-giant atmospheres.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8nm bandwidth:\u003c\/strong\u003e a narrow 8nm passband isolates the band for maximum atmospheric contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOD4 blocking:\u003c\/strong\u003e deep off-band rejection keeps the recorded signal clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh in-band throughput:\u003c\/strong\u003e approximately 90% peak transmittance helps offset the low light levels of methane-band work.\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 an 8nm band centered at 889nm with OD4 off-band blocking and approximately 90% peak transmittance. The surface is figured to 1\/4 lambda and the E-series multi-layer composite coating is applied to a high-quality 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 Methane-band imaging of Jupiter, Saturn, Uranus, and Neptune to reveal high-altitude cloud, haze, and storm features; long-exposure lucky-imaging sequences with sensitive monochrome planetary cameras.\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. Because the methane band is a faint, deep-red\/near-infrared feature, the filter is best paired with a sensitive monochrome camera and a telescope of adequate aperture. Long exposures relative to standard RGB planetary work are typical.\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\u003eLow light levels:\u003c\/strong\u003e methane-band imaging is photon-starved, so longer exposures and larger apertures give the best results.\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\u003cli\u003e\n\u003cstrong\u003eCamera type:\u003c\/strong\u003e a sensitive monochrome camera is recommended for methane-band capture.\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 the methane band show?\u003c\/strong\u003e At 889nm, methane in giant-planet atmospheres absorbs light strongly, so high-altitude clouds and hazes stand out brightly against darker, deeper layers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich planets benefit most?\u003c\/strong\u003e Jupiter, Saturn, Uranus, and Neptune all show distinctive methane-band structure not seen in ordinary visible-light imaging.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBottom Line.\u003c\/strong\u003e A narrow 889nm methane-band filter in the convenient 1.25\" format, the Player One CH4 8nm opens up high-contrast atmospheric imaging of the giant planets for dedicated monochrome planetary imagers.\u003c\/p\u003e","brand":"Player One Astronomy","offers":[{"title":"Default Title","offer_id":53834291708015,"sku":"CH4-125E","price":180.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/CH4-E-1024x850.jpg?v=1784239722"},{"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\/collections\/narrowband-player-one.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}