{"id":7150,"date":"2025-04-26T14:05:01","date_gmt":"2025-04-26T12:05:01","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&#038;p=7150"},"modified":"2025-09-17T15:41:09","modified_gmt":"2025-09-17T13:41:09","slug":"filtre-oiii-7nm-prime-36mm-non-monte","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/filtre-oiii-7nm-prime-36mm-non-monte\/","title":{"rendered":"OIII filter 7nm Prime - 36mm (unmounted)"},"content":{"rendered":"<h3 style=\"text-align: center;\">Antlia OIII 7nm Prime filter<\/h3>\n<p><strong>Capture the faintest deep-sky OIII emissions with precision thanks to the Antlia OIII 7nm Prime filter.<\/strong> Designed for high-speed lenses up to f\/2, this filter guarantees maximum contrast and optimum signal to reveal the faintest nebulae.<\/p>\n<h2>Key features<\/h2>\n<ul>\n<li><strong>High transmission<\/strong> (&gt;90% at 500.7nm) to maximize the OIII emission signal.<\/li>\n<li><strong>Bandwidth 7nm<\/strong> ideal for combining performance and compatibility with fast optics.<\/li>\n<li><strong>OD4 deletion<\/strong> out-of-band for a better signal-to-noise ratio.<\/li>\n<li><strong>Can be used up to f\/2<\/strong> with no significant loss of performance, ideal for fast instruments.<\/li>\n<li><strong>One-piece design<\/strong> effectively limiting internal reflections and stellar halos.<\/li>\n<\/ul>\n<h2>Ideal applications<\/h2>\n<ul>\n<li>Imaging OIII nebulae<\/li>\n<li>Observation of planetary nebulae and Wolf-Rayet<\/li>\n<li>Photograph of supernova remnants<\/li>\n<li>Use in light-polluted or deep-sky areas<\/li>\n<\/ul>\n<h2>Technical specifications<\/h2>\n<table>\n<thead>\n<tr>\n<th>Features<\/th>\n<th>Detail<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Type<\/td>\n<td>OIII 7nm Prime<\/td>\n<\/tr>\n<tr>\n<td>FWHM (Full Width at Half Maximum)<\/td>\n<td>7nm<\/td>\n<\/tr>\n<tr>\n<td>Center wavelength (CWL)<\/td>\n<td>500.7nm<\/td>\n<\/tr>\n<tr>\n<td>Maximum transmission<\/td>\n<td>&gt;90%<\/td>\n<\/tr>\n<tr>\n<td>Out-of-band blocking<\/td>\n<td>OD4 (0.01%) between 300-1000nm<\/td>\n<\/tr>\n<tr>\n<td>Thickness<\/td>\n<td>2mm \u00b1 0.05mm<\/td>\n<\/tr>\n<tr>\n<td>Substrate<\/td>\n<td>Unglued monoblock optical glass<\/td>\n<\/tr>\n<tr>\n<td>Surface quality<\/td>\n<td>S\/D 60\/40 (MIL-O-13830 standard)<\/td>\n<\/tr>\n<tr>\n<td>Transmitted wavefront<\/td>\n<td>\u03bb\/4 or better<\/td>\n<\/tr>\n<tr>\n<td>Parallelism<\/td>\n<td>&lt;30 arcsec<\/td>\n<\/tr>\n<tr>\n<td>Warranty<\/td>\n<td>3 years against delamination<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Available formats<\/h2>\n<ul>\n<li>Unmounted: \u00d836mm<\/li>\n<\/ul>\n<h2>Design and reliability<\/h2>\n<ul>\n<li>Surface treated to reduce scratching<\/li>\n<li>Blackened edges to eliminate internal reflections<\/li>\n<li>Spectral profile with sharp cut-off to limit halos around bright stars<\/li>\n<\/ul>\n<h2>Safety warning<\/h2>\n<p style=\"color: red;\"><strong>Warning: never look directly at the Sun with this filter.<\/strong> This can lead to serious, irreversible eye damage.<\/p>","protected":false},"excerpt":{"rendered":"<p>Filtre Antlia OIII 7nm Prime Capturez les plus faibles \u00e9missions OIII du ciel profond avec pr\u00e9cision gr\u00e2ce au filtre Antlia OIII 7nm Prime. Con\u00e7u pour les optiques rapides jusqu\u2019\u00e0 f\/2, ce filtre vous garantit un contraste maximal et un signal optimal pour r\u00e9v\u00e9ler les n\u00e9buleuses les plus t\u00e9nues. Caract\u00e9ristiques principales Transmission \u00e9lev\u00e9e (&gt;90% \u00e0 500.7nm) [&hellip;]<\/p>\n","protected":false},"featured_media":7153,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[791],"product_cat":[780,801],"product_tag":[],"class_list":{"0":"post-7150","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-antlia","7":"product_cat-filtres-bande-etroite","8":"product_cat-filtre-astrophotographie-du-ciel-profond","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\/7150","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=7150"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/7153"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=7150"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=7150"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=7150"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=7150"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}