{"id":90321,"date":"2025-11-29T09:30:10","date_gmt":"2025-11-29T08:30:10","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=90321"},"modified":"2026-07-18T11:54:28","modified_gmt":"2026-07-18T09:54:28","slug":"sky-watcher-skymax-90-ota","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/sky-watcher-skymax-90-ota\/","title":{"rendered":"Sky-Watcher Skymax-90 (OTA) - 90mm f\/13.9 Maksutov-Cassegrain"},"content":{"rendered":"<h2>Sky-Watcher SkyMax-90 (OTA): de zakformaat-planetenkijker<\/h2>\n<p>De Sky-Watcher SkyMax-90 is een Maksutov-Cassegrain met 90 mm opening en 1250 mm brandpuntsafstand (f\/13,9) in een buis die in bijna elke tas past. Dit is de losse optische buis (OTA) zonder montering: je zet hem op een eigen montering of via de fotostatief-aansluiting op een stevig fotostatief. Maximale planeetscherpte per euro en per kilo.<\/p>\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/Skywatcher-MC-90-1250-Maksutov-Telescoop-SkyMax-OTA-2.jpg\" alt=\"Sky-Watcher SkyMax-90 Maksutov-Cassegrain optische buis\" class=\"wp-image-90322\" title=\"\"><\/figure>\n<h2>Wat zie je door de SkyMax-90?<\/h2>\n<p>De maan toont haarscherpe kraters, bergketens en schaduwspel. Jupiter laat zijn wolkenbanden zien, Saturnus zijn ringen en Venus zijn fasen. Dubbelsterren splijt deze optiek verrassend goed voor zijn formaat. Heldere deep-sky doelen zoals de Orionnevel kunnen ook, maar het smalle beeldveld maakt planeten en maan het echte specialisme.<\/p>\n<h2>Loose tubing: your mounting, your choice<\/h2>\n<p>De OTA-uitvoering is er voor wie al een montering heeft of bewust licht wil reizen. Dankzij de standaard fotostatief-aansluiting werkt hij ook op een degelijk fotostatief voor maan, planeten en natuurobservatie overdag. De 1,25 inch aansluiting met 90 graden star diagonal maakt comfortabel kijken direct mogelijk.<\/p>\n<h2>This is how to get the most out of this telescope<\/h2>\n<ul>\n<li><strong>Give the thick correction lens cooling time:<\/strong> 30 to 45 minutes outside before looking at high magnification. A Maksutov rewards patience with a rock-steady image.<\/li>\n<li><strong>Protect against dew<\/strong> The front-mounted meniscus lens fogs up faster than a mirror. A dew shield is the most useful first upgrade for this type of telescope.<\/li>\n<li><strong>Virtually maintenance-free<\/strong> The closed tube keeps dust out and collimation is rarely an issue. Set it down and look.<\/li>\n<li><strong>Magnification:<\/strong> het 10 mm oculair geeft al 125x; precies waar deze optiek voor gemaakt is. Meer vergroting toevoegen heeft in het Nederlandse klimaat zelden zin.<\/li>\n<li><strong>Plan with the moon:<\/strong> Around the first quarter you see the most detail along the terminator. Our <a href=\"https:\/\/www.telescoop.nl\/en\/moon-calendar\/\">lunar calendar<\/a> have the best nights in a row.<\/li>\n<\/ul>\n<h2>For whom yes and for whom no<\/h2>\n<p><strong>Hello<\/strong> moon and planet watchers, city and balcony observers (bright targets are less affected by light pollution), and travelers who want a short, maintenance-free tube. Still unsure about the type? Our <a href=\"https:\/\/www.telescoop.nl\/en\/the-best-telescope-for-beginners\/\">Telescope Buying Guide for Beginners<\/a> List the considerations.<\/p>\n<p><strong>Not<\/strong> voor brede deep-sky-velden is het beeldveld van deze lange brandpuntsafstand te smal; een korte Newton past daar beter bij. Wil je een complete set met montering, kijk dan naar de SkyMax-90 EQ1 of een van de 102-bundels. Astrofotografie met lange belichtingen hoort bij de <a href=\"https:\/\/www.telescoop.nl\/en\/telescopes\/smart-telescopes\/\">smart telescopes<\/a>; moon photos with a smartphone adapter are precisely a strong point on a Maksutov.<\/p>\n<h2>Featured accessories<\/h2>\n<p>These accessories add the most after purchase:<\/p>\n<ul>\n<li><strong>Moon Filter 25%:<\/strong> at this long focal length, the moon is the main course, and bright. The <a href=\"https:\/\/www.telescoop.nl\/en\/omegon-moon-filter-25-125\/\">Omegon Moon Filter 25% (1.25 inches)<\/a> dims the light and increases the contrast. More explanation in our <a href=\"https:\/\/www.telescoop.nl\/en\/best-moon-filter-telescope\/\">Moon filter guide<\/a>.<\/li>\n<li><strong>Smartphone adapter:<\/strong> Maksutov telescopes, with their long focal length, are particularly good for impressive moon photos taken with a phone. The <a href=\"https:\/\/www.telescoop.nl\/en\/sky-watcher-smartphoto-plus-smartphone-adapter-20mm-eyepiece\/\">Sky-Watcher SmartPhoto+ adapter<\/a> comes with a special 20 mm photo eyepiece.<\/li>\n<li><strong>Carrier bag<\/strong> The short tube calls for a compact bag. Check out the <a href=\"https:\/\/www.telescoop.nl\/en\/telescope-accessories\/carrier-bags\/\">carrier bags<\/a> and choose the size that fits.<\/li>\n<\/ul>\n<h2>Technical specifications<\/h2>\n<table class=\"has-fixed-layout\">\n<thead>\n<tr>\n<th>Feature<\/th>\n<th>Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Type<\/td>\n<td>Reflector<\/td>\n<\/tr>\n<tr>\n<td>Design<\/td>\n<td>Maksutov<\/td>\n<\/tr>\n<tr>\n<td>Aperture (mm)<\/td>\n<td>90<\/td>\n<\/tr>\n<tr>\n<td>Focal length (mm)<\/td>\n<td>1250<\/td>\n<\/tr>\n<tr>\n<td>Focal Ratio (f\/)<\/td>\n<td>13,9<\/td>\n<\/tr>\n<tr>\n<td>Resolution<\/td>\n<td>1,28\u2033<\/td>\n<\/tr>\n<tr>\n<td>Limit value (mag)<\/td>\n<td>11,6<\/td>\n<\/tr>\n<tr>\n<td>Light output<\/td>\n<td>170\u00d7<\/td>\n<\/tr>\n<tr>\n<td>Max. useful magnification<\/td>\n<td>180\u00d7<\/td>\n<\/tr>\n<tr>\n<td>Tube weight (kg)<\/td>\n<td>1,4<\/td>\n<\/tr>\n<tr>\n<td>Tube construction<\/td>\n<td>Full tube<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"wp-block-columns is-layout-flex\">\n<div class=\"wp-block-column\" style=\"flex-basis:38%\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/Skywatcher-MC-90-1250-Maksutov-Telescoop-SkyMax-OTA-1.jpg\" alt=\"Sky-Watcher SkyMax-90 Maksutov-Cassegrain optische buis, productfoto 2\" class=\"wp-image-90323\" title=\"\"><\/figure>\n<\/div>\n<div class=\"wp-block-column\" style=\"flex-basis:62%\">\n<h2>Included in the box<\/h2>\n<ul>\n<li>Sky-Watcher SkyMax-90 optische buis (OTA, zonder montering)<\/li>\n<li>Eyepieces: 25 mm, 10 mm (1.25\u2033)<\/li>\n<li>Viewfinder: red dot finder<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<h2>Honest advice from observers<\/h2>\n<p>We sell and use the Sky-Watcher line ourselves. In our <a href=\"https:\/\/www.telescoop.nl\/en\/skywatcher-telescopes\/\">Sky-Watcher merk Guide<\/a> We'll explain which series are strong and which you'd rather skip. View the full range on our <a href=\"https:\/\/www.telescoop.nl\/en\/brands\/sky-watcher\/\">Sky-Watcher merk Page<\/a>. Order before 11:59 PM for fast delivery, in the Netherlands and Belgium.<\/p>","protected":false},"excerpt":{"rendered":"<p>The <strong>Sky-Watcher SkyMax-90 (OTA)<\/strong> is een Maksutov-Cassegrain van 90\/1250 mm in zakformaat: maximale maan- en planeetscherpte in een buis die in bijna elke tas past. Losse optische buis met fotostatief-aansluiting, 1,25 inch aansluiting en star diagonal.<\/p>","protected":false},"featured_media":97899,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[542],"product_cat":[51,568,3172,3169],"product_tag":[],"class_list":["post-90321","product","type-product","status-publish","has-post-thumbnail","product_brand-sky-watcher","product_cat-telescopen","product_cat-catadioptrische-telescopen","product_cat-maksutov-ota","product_cat-maksutov-cassegrain-telescopen","product_shipping_class-licht","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"bundled_by":[],"bundle_stock_status":"instock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[24771,91099,90398],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":90324,"url":"https:\/\/www.telescoop.nl\/en\/sky-watcher-skymax-102-ota\/","url_meta":{"origin":90321,"position":0},"title":"Sky-Watcher Skymax-102 (OTA) - 102mm f\/12.7 Maksutov-Cassegrain","author":"Info telescoop","date":"29-11-2025","format":false,"excerpt":"De Sky-Watcher SkyMax-102 (OTA) is een Maksutov-Cassegrain van 102\/1300 mm: contrastrijke maan- en planeetbeelden in een korte, gesloten buis. 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