{"id":12011,"date":"2025-11-21T19:05:19","date_gmt":"2025-11-21T18:05:19","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&#038;p=12011"},"modified":"2026-01-20T18:41:37","modified_gmt":"2026-01-20T17:41:37","slug":"celestron-skymaster-25x100-jumelles-dastronomie","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/celestron-skymaster-25x100-jumelles-dastronomie\/","title":{"rendered":"Celestron SkyMaster 25\u00d7100 - Astronomy binoculars"},"content":{"rendered":"<h3 style=\"text-align: center;\">Celestron SkyMaster 25\u00d7100 - Giant binoculars for astronomy<\/h3>\n<p>Visit <strong>Celestron SkyMaster 25\u00d7100<\/strong> represent the pinnacle of the SkyMaster range <strong>giant 100 mm binoculars<\/strong> with a <strong>25x magnification<\/strong>, designed to offer performance comparable to that of a small telescope, while retaining the visual comfort of a pair of binoculars.<br \/>\nThey are ideal for astronomy, long-distance observation, tracking deep-sky objects, studying distant landscapes or marine observation.<\/p>\n<p>Thanks to their enormous light-gathering <strong>BaK-4 prisms<\/strong> and their <strong>multi-layer lenses<\/strong>, These binoculars deliver bright, high-contrast, highly detailed images. Their robust design and tripod mountability make them ideal for the discerning astronomer.<\/p>\n<h3>Giant 100 mm lenses: exceptional luminous power<\/h3>\n<p>SkyMaster 25\u00d7100 models are equipped with massive <strong>100 mm<\/strong>, which are capable of collecting an enormous amount of light. This enables :<\/p>\n<ul>\n<li>greater visibility in the <strong>dark conditions<\/strong> and under the night sky; ;<\/li>\n<li>access to <strong>deep sky objects<\/strong> than 70 or 80 mm models; ;<\/li>\n<li>detailed observation of complex stellar regions ;<\/li>\n<li>excellent brightness for long distances over land; ;<\/li>\n<li>a <strong>very high twilight factor<\/strong> 50, perfect for low light.<\/li>\n<\/ul>\n<p>With a lens focal length of <strong>417 mm<\/strong>, These binoculars feature a brightness ratio of around f\/4.2, which is highly effective in maximizing the clarity of night-time images.<\/p>\n<h3>25x magnification: lunar detail and brilliant stellar objects<\/h3>\n<p>Magnification <strong>25x<\/strong> provides a remarkable level of detail:<\/p>\n<ul>\n<li>well-defined lunar craters, mountain ranges, rimae and lunar seas ;<\/li>\n<li>rich star clusters such as the Pleiades, the Double Perseus Cluster, M7, M11 ;<\/li>\n<li>globular clusters such as <strong>M13<\/strong> or <strong>M3<\/strong> appear granular ;<\/li>\n<li>some bright nebulae ;<\/li>\n<li>details of extremely remote terrestrial subjects.<\/li>\n<\/ul>\n<p>This magnification is powerful but still usable, provided you use a <strong>stable tripod<\/strong>.<\/p>\n<h3>Wide field of vision despite power<\/h3>\n<p>SkyMaster 25\u00d7100 offer a generous field of view for their class:<\/p>\n<ul>\n<li><strong>3\u00b0<\/strong> angular field ;<\/li>\n<li><strong>156 ft<\/strong> to 1000 yds (\u2248 52 m to 1000 m) ;<\/li>\n<li><strong>Output pupil<\/strong> 4 mm, ideal for night vision ;<\/li>\n<li><strong>Eye relief<\/strong> comfortable 15 mm.<\/li>\n<\/ul>\n<p>The combination of field of view and aperture makes for a highly immersive experience, especially when observing the deep sky.<\/p>\n<h3>High-performance optics: BaK-4 and Multi-Coated<\/h3>\n<p>For maximum contrast and sharpness, Celestron equips these binoculars with high-quality optical components:<\/p>\n<ul>\n<li><strong>Porro prisms in BaK-4 glass<\/strong> : well-rounded pupil, bright image, clean field edge.<\/li>\n<li><strong>Multi-Coated lenses<\/strong> : reduced glare, improved contrast, natural colors.<\/li>\n<li><strong>Ultra sharp focus<\/strong> all over the field.<\/li>\n<\/ul>\n<p>This combination makes for spectacular viewing, especially of the Moon and dense stellar regions.<\/p>\n<h3>Robust, ergonomic construction<\/h3>\n<p>Celestron SkyMaster 25\u00d7100 are built to last and to withstand outdoor conditions:<\/p>\n<ul>\n<li><strong>Rubber coating<\/strong> ensuring <strong>firm grip<\/strong> and good protection.<\/li>\n<li><strong>Water resistance<\/strong> (water-resistant) for outdoor use.<\/li>\n<li>Reinforced structure adapted to their imposing size.<\/li>\n<\/ul>\n<p>Note: these binoculars are not nitrogen-purged and are therefore not fully protected against internal fogging in extreme conditions.<\/p>\n<h3>Tripod essential: stability for 4 kg of optics<\/h3>\n<p>With a weight of almost <strong>4 kg (3969 g)<\/strong>, these binoculars absolutely require <strong>a sturdy mount or tripod<\/strong>.<\/p>\n<ul>\n<li>A <strong>integrated tripod stage<\/strong> for fast, secure fastening.<\/li>\n<li>Compatible with most rugged photo and video tripods.<\/li>\n<\/ul>\n<p>When mounted on a tripod, the SkyMaster 25\u00d7100 becomes a true wide-field astronomical instrument.<\/p>\n<h3>Accessories included<\/h3>\n<p>The binoculars are supplied with all essential accessories:<\/p>\n<ul>\n<li><strong>Lens caps<\/strong><\/li>\n<li><strong>Rainguard<\/strong><\/li>\n<li><strong>Nylon carrying case<\/strong><\/li>\n<li><strong>Neck strap<\/strong><\/li>\n<li><strong>Cleaning cloth<\/strong><\/li>\n<li><strong>Instruction manual<\/strong><\/li>\n<\/ul>\n<h3>Astronomy performance<\/h3>\n<p>Thanks to their massive 100 mm aperture, SkyMaster 25\u00d7100 offer spectacular access to the sky:<\/p>\n<ul>\n<li><strong>Magnitude limit<\/strong>\u00a0up to <strong>12,5<\/strong> under excellent skies ;<\/li>\n<li>\u2248 <strong>11,5<\/strong> en ciel mod\u00e9r\u00e9 ;<\/li>\n<li>\u2248 <strong>10,5<\/strong> en ciel m\u00e9diocre.<\/li>\n<\/ul>\n<p>They are particularly impressive on :<\/p>\n<ul>\n<li>the <strong>Moon<\/strong> ;<\/li>\n<li>visit <strong>open clusters<\/strong> ;<\/li>\n<li>visit <strong>bright globular clusters<\/strong> ;<\/li>\n<li>visit <strong>nebulous regions<\/strong> ;<\/li>\n<li>visit <strong>double stars<\/strong> shiny ;<\/li>\n<li>the Milky Way in wide field.<\/li>\n<\/ul>\n<h3>Detailed technical specifications<\/h3>\n<table>\n<tbody>\n<tr>\n<td><strong>Type<\/strong><\/td>\n<td>Giant Porro prism binoculars<\/td>\n<\/tr>\n<tr>\n<td><strong>Magnification<\/strong><\/td>\n<td>25x<\/td>\n<\/tr>\n<tr>\n<td><strong>Lens diameter<\/strong><\/td>\n<td>100 mm (3.94\u2033)<\/td>\n<\/tr>\n<tr>\n<td><strong>Lens focal length<\/strong><\/td>\n<td>417.32 mm (16.43\u2033)<\/td>\n<\/tr>\n<tr>\n<td><strong>Angular field<\/strong><\/td>\n<td>3\u00b0<\/td>\n<\/tr>\n<tr>\n<td><strong>Linear field at 1000 m<\/strong><\/td>\n<td>\u2248 52 m (156 ft at 1000 yds)<\/td>\n<\/tr>\n<tr>\n<td><strong>Output pupil<\/strong><\/td>\n<td>4 mm<\/td>\n<\/tr>\n<tr>\n<td><strong>Eye relief<\/strong><\/td>\n<td>15 mm<\/td>\n<\/tr>\n<tr>\n<td><strong>Minimum focusing distance<\/strong><\/td>\n<td>24.4 m (80 ft)<\/td>\n<\/tr>\n<tr>\n<td><strong>Interpupillary distance<\/strong><\/td>\n<td>56 - 72 mm<\/td>\n<\/tr>\n<tr>\n<td><strong>Diopter adjustment<\/strong><\/td>\n<td>\u00b15<\/td>\n<\/tr>\n<tr>\n<td><strong>Twilight factor<\/strong><\/td>\n<td>50<\/td>\n<\/tr>\n<tr>\n<td><strong>Relative brightness<\/strong><\/td>\n<td>16<\/td>\n<\/tr>\n<tr>\n<td><strong>Prisms<\/strong><\/td>\n<td>BaK-4, Porro type<\/td>\n<\/tr>\n<tr>\n<td><strong>Optical treatments<\/strong><\/td>\n<td>Multi-Coated<\/td>\n<\/tr>\n<tr>\n<td><strong>Environmental protection<\/strong><\/td>\n<td>Water-resistant<\/td>\n<\/tr>\n<tr>\n<td><strong>Nitrogen purging<\/strong><\/td>\n<td>No<\/td>\n<\/tr>\n<tr>\n<td><strong>Weight<\/strong><\/td>\n<td>3969 g (140 oz)<\/td>\n<\/tr>\n<tr>\n<td><strong>Dimensions<\/strong><\/td>\n<td>256 \u00d7 130 \u00d7 388 mm (10.1\u2033 \u00d7 5.1\u2033 \u00d7 15.28\u2033)<\/td>\n<\/tr>\n<tr>\n<td><strong>Tripod adapter<\/strong><\/td>\n<td>Yes - strongly recommended<\/td>\n<\/tr>\n<tr>\n<td><strong>Carrying case<\/strong><\/td>\n<td>Nylon<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Solar safety warning<\/h3>\n<p><strong>Never observe the Sun through these binoculars without a suitable solar filter.<\/strong><\/p>\n<ul>\n<li>Never look directly at the Sun: risk of <strong>irreversible eye damage<\/strong>.<\/li>\n<li>Never project an image of the Sun through the binoculars: risk of \u2019sunburn\".\u2019<strong>fire or internal destruction<\/strong>.<\/li>\n<li>Never leave the instrument unattended.<\/li>\n<\/ul>\n<h3>Who are Celestron SkyMaster 25\u00d7100 for?<\/h3>\n<p>These binoculars are designed for <strong>passionate astronomers<\/strong> looking for a powerful, bright and immersive instrument, capable of rivaling a small-diameter telescope while offering a wide field of view and incomparable binocular vision.<br \/>\nThey are also suitable for long-distance terrestrial observation for demanding users with a sturdy tripod.<\/p>","protected":false},"excerpt":{"rendered":"<p>Celestron SkyMaster 25&#215;100 \u2013 Jumelles g\u00e9antes pour l\u2019astronomie Les Celestron SkyMaster 25&#215;100 repr\u00e9sentent le sommet de la gamme SkyMaster : des jumelles g\u00e9antes de 100\u00a0mm avec un grossissement de 25x, con\u00e7ues pour offrir des performances comparables \u00e0 un petit t\u00e9lescope tout en conservant le confort visuel d\u2019une paire de jumelles. Elles sont id\u00e9ales pour l\u2019astronomie, [&hellip;]<\/p>\n","protected":false},"featured_media":12012,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[413],"product_cat":[757],"product_tag":[],"class_list":{"0":"post-12011","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-celestron","7":"product_cat-jumelles-lunettes_refracteurs","9":"first","10":"instock","11":"taxable","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/12011","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=12011"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/12012"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=12011"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=12011"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=12011"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=12011"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}