{"title":"Lumicon","description":"\u003cdiv\u003e\n  \u003cp\u003e\n    Lumicon's visual nebula filters have been the reference point for contrast enhancement at the eyepiece for decades. Under a suburban sky, a UHC filter can turn the Veil Nebula from a suspicion into a structure, and an OIII filter does the same for planetary nebulae — an effect that no amount of aperture substitutes for. David Astro carries Lumicon products in Canada, in stock and shipping from Canada.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    Visual filters work differently from imaging filters, and the right choice depends on aperture and target class. Tell us your telescope and what you are chasing and we will narrow it.\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- more --\u003e\n\u003cdiv\u003e\n  \u003ch2\u003eLumicon's Filter Range and What Each Reveals\u003c\/h2\u003e\n  \u003cp\u003e\n    Every filter here works by rejecting wavelengths rather than adding light, so the effect depends on whether your target emits in a narrow band or across the spectrum.\n  \u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUHC filters:\u003c\/strong\u003e Pass the main nebula emission lines together, giving the broadest useful contrast gain across emission nebulae. The best first filter for most visual observers.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOIII filters:\u003c\/strong\u003e Very narrow, isolating doubly ionized oxygen. Dramatic on planetary nebulae and supernova remnants, and dim enough that it wants aperture behind it.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eH-beta filters:\u003c\/strong\u003e A specialist filter for a short list of targets, most famously the Horsehead and California nebulae, where it makes an otherwise very difficult object attainable.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDeep Sky and broadband filters:\u003c\/strong\u003e Milder light pollution rejection that keeps stars looking natural, suited to galaxies and clusters where narrow filters do not help.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eComet filters:\u003c\/strong\u003e Tuned to the emission bands of cometary gas, enhancing tail structure against sky background.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVisual accessories:\u003c\/strong\u003e Off-axis guiders, filter holders and adapters from the wider Lumicon catalogue.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n  \u003ch2\u003eWhy Choose David Astro for Lumicon\u003c\/h2\u003e\n  \u003cp\u003e\n    Nebula filters are easy to buy in the wrong strength for the telescope you own.\n  \u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAperture matched:\u003c\/strong\u003e An OIII filter in a 4 inch telescope leaves very little light. We recommend filter strength against your aperture so the view is enhanced rather than merely darkened.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTarget-based selection:\u003c\/strong\u003e Galaxies and star clusters gain nothing from narrow filters. We will tell you when a filter is the wrong solution for what you want to see.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAuthorized dealer:\u003c\/strong\u003e Genuine Lumicon filters with verified coatings and full manufacturer warranty, stocked domestically and ready to ship.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBarrel sizing:\u003c\/strong\u003e We confirm 1.25 inch or 2 inch fit against your eyepiece set and diagonal before you order.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eShips from Canada:\u003c\/strong\u003e No duties or brokerage fees for Canadian orders.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n  \u003ch2\u003eLumicon in Canada — Frequently Asked Questions\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003e\u003cstrong\u003eUHC or OIII for a first nebula filter?\u003c\/strong\u003e\u003c\/dt\u003e\n    \u003cdd\u003eUHC. It works on a much wider range of targets and dims the view less, which matters in apertures under about 10 inches. Add OIII later specifically for planetary nebulae and supernova remnants.\u003c\/dd\u003e\n    \u003cdt\u003e\u003cstrong\u003eWill a nebula filter help with galaxies?\u003c\/strong\u003e\u003c\/dt\u003e\n    \u003cdd\u003eNo. Galaxies emit across the spectrum, so a narrow filter removes as much galaxy light as sky light. A mild broadband filter can help marginally under heavy light pollution; dark skies help far more.\u003c\/dd\u003e\n    \u003cdt\u003e\u003cstrong\u003eIs an H-beta filter worth buying?\u003c\/strong\u003e\u003c\/dt\u003e\n    \u003cdd\u003eOnly if the Horsehead, California Nebula and a handful of similar targets are specifically what you want. It is a superb filter with a very short target list.\u003c\/dd\u003e\n    \u003cdt\u003e\u003cstrong\u003eDo visual filters work for imaging?\u003c\/strong\u003e\u003c\/dt\u003e\n    \u003cdd\u003eVisual nebula filters can be used for imaging but are generally wider than dedicated imaging narrowband filters and are not designed for fast focal ratios. For imaging, use purpose-built narrowband.\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n  \u003ch2\u003eChoosing a nebula filter?\u003c\/h2\u003e\n  \u003cp\u003eTell us your aperture and your target list and we will recommend the right one. Canadian stock, worldwide shipping.\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"lumicon-neutral-density-filter","title":"Lumicon Filtre de Densité Neutre","description":"\u003c!-- more --\u003e\u003ch2\u003e ND13\u003c\/h2\u003e\n\u003cp\u003e Le filtre Lumicon Neutral Density 13 atténuera l'éblouissement de la pleine lune et permettra plus de détails planétaires que jamais ! Le Lumicon ND13 transmet 13 % de toute la lumière incidente, tout en bloquant 87 %. Pour l'observation lunaire avec des télescopes de 8\" (200 mm) et plus.\u003c\/p\u003e\n\u003cp\u003e Les filtres à densité neutre Lumicon sont fabriqués à partir de verre optique de haute qualité et permettent un contraste maximal lors de la visualisation des détails planétaires et lunaires. Meulage de précision individuel, hautement poli avec des revêtements de transmission de lumière maximale des deux côtés.\u003c\/p\u003e\n\u003ch2\u003e ND25\u003c\/h2\u003e \u003cp\u003eLe filtre Lumicon Neutral Density 25 peut augmenter le contraste pour extraire plus de détails sur la lune pleine ou gibbeuse trop brillante et diviser ces étoiles doubles faibles! Lumicon ND25 transmet 25 % de toute la lumière incidente, tout en bloquant 75 %. Pour l'observation lunaire et planétaire avec des télescopes de 5\" (125 mm) et plus.\u003c\/p\u003e\n\u003cp\u003e Les filtres à densité neutre Lumicon sont fabriqués à partir de verre optique renommé Schott et Hoya et permettent un contraste maximal lors de la visualisation des détails planétaires et lunaires. Meulage de précision individuel, hautement poli avec des revêtements de transmission de lumière maximale des deux côtés.\u003c\/p\u003e\n\u003ch2\u003e ND50\u003c\/h2\u003e\n\u003cp\u003e Le filtre Lumicon Neutral Density 50 aidera à révéler les détails subtils du système solaire ! Lumicon ND50 transmet 50 % de toute la lumière incidente, tout en bloquant 50 %. Parfait pour l'observation lunaire et planétaire et la séparation des étoiles doubles.\u003c\/p\u003e\n\u003cp\u003e Les filtres à densité neutre Lumicon sont fabriqués à partir de verre optique de haute qualité et permettent un contraste et des détails maximum. Meulage de précision individuel, hautement poli avec des revêtements de transmission de lumière maximale des deux côtés.\u003c\/p\u003e","brand":"Lumicon","offers":[{"title":"1.25\" \/ 13","offer_id":44967494484253,"sku":"LUM-LF1080","price":82.0,"currency_code":"CAD","in_stock":true},{"title":"1.25\" \/ 25","offer_id":44967494517021,"sku":"LUM-LF1085","price":82.0,"currency_code":"CAD","in_stock":false},{"title":"1.25\" \/ 50","offer_id":44967494549789,"sku":"LUM-LF1090","price":82.0,"currency_code":"CAD","in_stock":false},{"title":"2\" \/ 13","offer_id":44967494582557,"sku":"LUM-LF2080","price":85.0,"currency_code":"CAD","in_stock":false},{"title":"2\" \/ 25","offer_id":44967494615325,"sku":"LUM-LF2085","price":85.0,"currency_code":"CAD","in_stock":false},{"title":"2\" \/ 50","offer_id":44967494648093,"sku":"LUM-LF2090","price":85.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Lumicon-Neutral-Density-Filter-ND13-1-25-inch__27867.1597638221.1280.1280.jpg?v=1684342951"},{"product_id":"lumicon-4-pieces-vinyl-dust-cover-1-25","title":"Lumicon Capuchon en Vinyle 4 Pièces - 1.25\"","description":"\u003c!-- more --\u003e \u003cp\u003eLe cache-poussière en vinyle Lumicon 4 pièces de 1,25 pouces aide à protéger vos accessoires optiques de 1,25 \"de la poussière et de la saleté nuisibles. Insérez-le sur la petite extrémité des oculaires ou des accessoires pour sécuriser l'ouverture et garder les polluants à distance.\u003c\/p\u003e\n\u003cp\u003e Convient aux petits barils d'oculaires et d'accessoires de 1,25\" standard de l'industrie.\u003c\/p\u003e","brand":"Lumicon","offers":[{"title":"Default Title","offer_id":44967496417565,"sku":"LUM-LV1010","price":11.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Lumicon-4-Pieces-Vinyl-Dust-Cover-1-25-inch-1__71373.1597638235.1280.1280.jpg?v=1684343018"},{"product_id":"lumicon-thread-in-extension-tube-w-2-eyepiece-push-back-2","title":"Lumicon Tube d'Extension Fileté avec Coulant 2\" - 2\"","description":"\u003c!-- more --\u003e\u003cp\u003e Tube d'extension fileté Lumicon de 2 pouces - Oculaire de 2 pouces Repoussez les fils dans les oculaires de télescope de 2 \"pour une petite extension de mise au point. Fournit une plage d'extension de l'oculaire de 0 à 2\". Comprend des filetages de filtre de 2 \"\/ 48 mm.\u003c\/p\u003e","brand":"Lumicon","offers":[{"title":"Default Title","offer_id":44967501660445,"sku":"LUM-LA1025","price":34.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Lumicon-Thread-in-Extension-Tube-with-2-inch-Eyepiece-Push-Back-2-inch-1__01833.1597638249.1280.1280.jpg?v=1684343065"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/collections\/Lumicon-Logo.jpg?v=1683750753","url":"https:\/\/davidastro.com\/fr-us\/collections\/lumicon.oembed","provider":"David Astro","version":"1.0","type":"link"}