{"id":8158,"date":"2025-05-22T14:33:39","date_gmt":"2025-05-22T12:33:39","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&p=8158"},"modified":"2025-09-17T15:43:00","modified_gmt":"2025-09-17T13:43:00","slug":"filtre-dual-band-pour-vespera","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/filtre-dual-band-pour-vespera\/","title":{"rendered":"Dual Band filter for Vespera"},"content":{"rendered":"

The Dual Band Vespera filter is a dual narrow-band interference filter that significantly improves photo quality, whether you're observing from an urban or natural environment.<\/p>\n

\"Filtre<\/p>\n

By precisely selecting the wavelengths of Hydrogen Alpha (H-alpha) and Oxygen III (O-III), found mainly in nebulae, the filter enhances the contrast between the stellar object and the background sky. This results in a superior image quality, with finer details and stars.<\/p>\n

 <\/p>\n

Let only the essential pass<\/strong><\/p>\n

The Dual Band filter has been designed to allow only two particular wavelengths to reach the Vespera sensor:
\n- O-III
\n- H-alpha<\/p>\n

The filtered wavelengths make it particularly effective for photographing nebulae in emission (e.g. Orion nebula M42, Heart nebula IC 1805 ...), obscure nebulae surrounded by hydrogen (e.g. Horsehead nebula, Elephant Trunk nebula), planetary nebulae (e.g. Owl nebula M97, Moon nebula IC 1805 ...): Horsehead Nebula, Elephant Trunk Nebula), planetary nebulae (e.g. Owl Nebula M97, Dumbbell Nebula M27...), supernova remnants (e.g. Swan Lace, Crab Nebula M1).<\/p>\n

For globular clusters (e.g. Hercules cluster M13, cluster M92...), the selectivity of the Dual Band filter makes it possible to obtain finer stars.<\/p>\n

 <\/p>\n

A custom-designed filter\u00a0<\/b><\/p>\n

The optical quality of the Dual Band filter has been specifically studied by our engineers to offer full aperture use, without any impact on the instrument's optical diameter. The lens ring is equipped with an electronic micro-map that enables Vespera to detect the Dual Band filter and adapt its observation and image processing parameters.<\/p>\n

 <\/p>\n

Transmission curve<\/b><\/p>\n

The filter has 12nm of bandwidth in each of the two wavelengths (O-III = 500.7nm, H-alpha = 656.3nm).<\/p>","protected":false},"excerpt":{"rendered":"

Le filtre Dual Band Vespera est un filtre interf\u00e9rentiel \u00e0 bande \u00e9troite double qui permet d\u2019am\u00e9liorer significativement la qualit\u00e9 des photos, que vous observiez depuis un environnement urbain ou naturel. En s\u00e9lectionnant tr\u00e8s pr\u00e9cis\u00e9ment les longueurs d\u2019ondes de l\u2019Hydrog\u00e8ne Alpha (H-alpha) et l\u2019Oxyg\u00e8ne III (O-III), qu\u2019on trouve principalement dans les n\u00e9buleuses, le filtre va augmenter […]<\/p>\n","protected":false},"featured_media":8179,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[818],"product_cat":[803,780],"product_tag":[],"class_list":{"0":"post-8158","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-vaonis","7":"product_cat-filtres-multi-bandes","8":"product_cat-filtres-bande-etroite","10":"first","11":"on_supplier","12":"taxable","13":"shipping-taxable","14":"purchasable","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/8158","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/comments?post=8158"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/8179"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=8158"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=8158"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=8158"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=8158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}