{"id":40712,"date":"2023-11-14T14:54:38","date_gmt":"2023-11-14T13:54:38","guid":{"rendered":"https:\/\/www.ganymedes.nl\/?post_type=product&#038;p=40712"},"modified":"2025-12-06T13:11:30","modified_gmt":"2025-12-06T12:11:30","slug":"optolong-l-ultimate-1-25-inch-3nm-filter","status":"publish","type":"product","link":"https:\/\/dev4-ganymedes.nl\/en\/product\/optolong-l-ultimate-1-25-inch-3nm-filter\/","title":{"rendered":"Optolong L-Ultimate 1.25 inch 3nm filter"},"content":{"rendered":"<h2>Naast de 2 inch L-Ultimate komt Optolong nu met het L-Ultimate 1,25 inch filter<\/h2>\n<p>Het Optolong L-Ultimate 1.25 inch dual-band filter van 3 nm is ontworpen om het effect van lichtvervuiling drastisch te verminderen. Met 3 nm bandbreedte isoleert het de emissies van de nevels in H-Alpha (rood) en OIII (groen, blauw). Het blokkeert lichtvervuiling, maximaliseert het signaal van nevels en maakt de hemelachtergrond donkerder. Het blokkeert ook kunstlicht van kwikdamplampen, hoge- en lagedruknatriumdamplampen en ongewenst natuurlijk licht dat wordt veroorzaakt door de emissie van neutrale zuurstof in onze atmosfeer.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-32755 size-full\" title=\"Optolong L-Ultimate 2 inch 3nm filter\" src=\"https:\/\/www.ganymedes.nl\/wp-content\/uploads\/2022\/09\/Optolong-L-Ultimate-2-inch-2.png\" alt=\"Optolong L-Ultimate 2 inch 3nm filter\" width=\"1175\" height=\"576\" srcset=\"https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2022\/09\/Optolong-L-Ultimate-2-inch-2.png 1175w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2022\/09\/Optolong-L-Ultimate-2-inch-2-324x159.png 324w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2022\/09\/Optolong-L-Ultimate-2-inch-2-416x204.png 416w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2022\/09\/Optolong-L-Ultimate-2-inch-2-300x147.png 300w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2022\/09\/Optolong-L-Ultimate-2-inch-2-1030x505.png 1030w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2022\/09\/Optolong-L-Ultimate-2-inch-2-768x376.png 768w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2022\/09\/Optolong-L-Ultimate-2-inch-2-140x69.png 140w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2022\/09\/Optolong-L-Ultimate-2-inch-2-500x245.png 500w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2022\/09\/Optolong-L-Ultimate-2-inch-2-800x392.png 800w\" sizes=\"auto, (max-width: 1175px) 100vw, 1175px\" \/><\/p>\n<p>Maximaliseer de transmissie van de belangrijkste emissielijnen van de nevel in OIII (496 nm en 500 nm) en H-alfa (656 nm). Bij gebruik met DSLR, kleur\/MONO CMOS en CCD is dit filter echter niet geschikt voor systemen met een snelle ratio.<\/p>\n<h3>Emissielijnen<\/h3>\n<p>Het voordeel van L-Ultimate is dat het alleen door de emissielijnen OIII (500,7 nm) en Ha (656,3 nm) gaat.\u00a0 In welk geval alle andere emissielijnen voor lichtvervuiling worden ge\u00eblimineerd. Zodat alleen de emissie- en reflectiesignalen van de nevel worden weergegeven en vastgelegd tijdens het fotograferen. Daarom is de luchtachtergrond van het beeld donkerder en is het contrast tussen de nevels en de signaal-ruisverhouding sterk verbeterd.<\/p>\n<p>In gebieden met veel lichtvervuiling kan het product ook selectief lichtvervuiling filteren. En het ruissignalen door de emissielijnen van nevels filteren en uiteindelijk de impact van lichtvervuiling op astrofotografie vermijden.<\/p>\n<p>Het verschilt van de serie dual-smalband L-eNhance en <a href=\"\/product\/optolong-l-extreme-2-inch-dual-band-filter\/\">L-eXtreme<\/a> doordat L-Ultimate een dual-3nm-bandbreed filter is dat alleen door Ha- en OIII-emissielijnen gaat. Je krijgt een donkere hemelachtergrond, meer contrast van het beeld en de onderdrukking op sterren. L-Ultimate is ook geoptimaliseerd op het gebied van halo-prestaties. Zodat er geen duidelijke halo is bij het fotograferen op een helder sterobject.<\/p>\n<h3>Kenmerken:<\/h3>\n<ul>\n<li>Substraat: Optisch glas<\/li>\n<li>FWMH: OIII 3nm Ha 3nm<\/li>\n<li>Blokkeerbereik: 300-1000nm<\/li>\n<li>Blokkering: &gt; OD4<\/li>\n<li>Oppervlaktekwaliteit: 60\/40<\/li>\n<li>Doorlatende lichtafwijking: \u03bb\/4<\/li>\n<\/ul>\n<h3>Levering van het Optolong L-Ultimate 1.25 inch 3nm filter omvat:<\/h3>\n<ul>\n<li>Optolong L-Ulitmate 3nm filter in 1.25 inch formaat<\/li>\n<li>Plastic opbergdoosje<\/li>\n<\/ul>\n<h4>Plaats je bestelling online of kom langs in de winkel<\/h4>\n<p>Heb je gevonden wat je zoekt en wil je bijvoorbeeld de Optolong L-Ultimate 1.25 inch bestellen? Dan doe je dit heel eenvoudig online. Bekijk je deze producten liever in het echt voordat je ze koopt? Ook dat is bij ons mogelijk. Je bent van harte welkom in onze showroom in Amstelveen van maandag tot vrijdag tussen 10.00 en 17.00 uur. Op zaterdag is de showroom ook geopend, maar dan van 10.00 tot 16.30 uur. Voor meer informatie en advies kun je ook telefonisch contact met ons opnemen via <a href=\"tel:0031206412083\">020-6412083<\/a>. We helpen je graag.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Het L-Ultimate filter, nu leverbaar in zowel 2 inch als 1.25 inch variant. Het is een 3nm dual band filter geschikt voor astrofotografische doeleinde.<\/p>\n","protected":false},"featured_media":40713,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_vp_format_video_url":"","_vp_image_focal_point":[],"_vp_custom_popup_image":0,"_vp_format_audio_url":"","_vp_custom_thumbnail":0,"_vp_custom_thumbnail_focal_point":[],"_vp_hover_thumbnail":0,"_vp_hover_thumbnail_focal_point":[]},"product_brand":[],"product_cat":[267,274,342,394],"product_tag":[],"class_list":{"0":"post-40712","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-astrophotography-en","7":"product_cat-astrophotography-filters-en","8":"product_cat-brands-en","9":"product_cat-brands-optolong-en","11":"first","12":"instock","13":"taxable","14":"shipping-taxable","15":"purchasable","16":"product-type-simple"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Optolong L-Ultimate 1.25 inch 3nm filter - Ganymedes<\/title>\n<meta name=\"description\" content=\"Het Optolong L-Ultimate 1.25 inch 3nm filter. 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