{"id":33869,"date":"2025-11-15T13:31:10","date_gmt":"2025-11-15T12:31:10","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=33869"},"modified":"2026-03-04T17:03:09","modified_gmt":"2026-03-04T16:03:09","slug":"william-optics-zenithstar-61-360-apo-ii-ota","status":"publish","type":"product","link":"https:\/\/staging.telescoop.nl\/en\/william-optics-zenithstar-61-360-apo-ii-ota\/","title":{"rendered":"William Optics ZenithStar 61\/360 APO II OTA"},"content":{"rendered":"

William Optics AP 61\/360 ZS61 II - Compact power for clear image<\/strong><\/h3>\n\n\n\n

The William Optics AP 61\/360 ZS61 II<\/strong> shows that small can also be impressive. This lightweight apo is perfect for traveling astronomers and photographers. You set it up quickly, focus easily and get a clear, sharp image immediately. Ideal for visual observation and astrophotography with any SLR camera.<\/p>\n\n\n\n

\n
\"William<\/figure>\n<\/figure>\n\n\n\n

Sharp and large field of view<\/strong><\/h3>\n\n\n\n

With 61 mm aperture and 360 mm focal length, you get a wide image with lots of detail. You can see complete Moon shots at once and can even capture the Sun with an appropriate filter. The wide field of view makes your photos instantly attractive and complete.<\/p>\n\n\n\n

Color pure and sharp thanks to FPL-53 glass<\/strong><\/h3>\n\n\n\n

The lens uses FPL-53 glass for excellent color purity. Stars and planets appear sharp and without unwanted purple edges. The result: true-to-life images and clear photos that look professional.<\/p>\n\n\n\n

\n
\"William<\/figure>\n<\/figure>\n\n\n\n

Easy focusing, stable and reliable<\/strong><\/h3>\n\n\n\n

The focuser with 1:10 fine adjustment lets you work precisely, even with heavy cameras. The rack design keeps everything stable so your image doesn't shift. You can add accessories without sacrificing focus.<\/p>\n\n\n\n

Versatile for astrophotography and nature observation<\/strong><\/h3>\n\n\n\n

The ZS61 II is suitable for both deep-sky photography and nature observations. Thanks to the included Flat61R flattener, stars stay sharp all the way to the corners of your image. The telescope is compact, rugged and easy to take with you on the road or to dark locations.<\/p>\n\n\n\n

Specifications<\/strong><\/h3>\n\n\n\n

Optics<\/strong><\/h4>\n\n\n\n
Feature<\/th>Description<\/th><\/tr><\/thead>
Type<\/td>Refractor<\/td><\/tr>
Design<\/td>Apochromat<\/td><\/tr>
Lens Design<\/td>Doublet<\/td><\/tr>
Aperture (mm)<\/td>61<\/td><\/tr>
Focal length (mm)<\/td>360<\/td><\/tr>
Aperture ratio (f\/)<\/td>5,9<\/td><\/tr>
Resolution<\/td>1,89\u2033<\/td><\/tr>
Limit value (mag)<\/td>10,7<\/td><\/tr>
Light output<\/td>80\u00d7<\/td><\/tr>
Max. useful magnification<\/td>122\u00d7<\/td><\/tr>
Tube material<\/td>Aluminum<\/td><\/tr>
Tube length (mm)<\/td>315<\/td><\/tr>
Transport length (mm)<\/td>245<\/td><\/tr>
Tube construction<\/td>Full tube<\/td><\/tr>
Tube weight (kg)<\/td>2,2<\/td><\/tr>
Corrected field of view (mm)<\/td>43<\/td><\/tr>
Coating<\/td>SMC multilayer coating<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Focuser<\/strong><\/h4>\n\n\n\n
Feature<\/th>Description<\/th><\/tr><\/thead>
Design<\/td>Rack<\/td><\/tr>
Free opening (mm)<\/td>51<\/td><\/tr>
Adjustment range (mm)<\/td>75<\/td><\/tr>
Reduction<\/td>1:10 finesse<\/td><\/tr>
Camera connection<\/td>M48<\/td><\/tr>
Ocular connection<\/td>2\u2033<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Mount<\/strong><\/h4>\n\n\n\n
Feature<\/th>Description<\/th><\/tr><\/thead>
Type of mount<\/td>Without mount<\/td><\/tr>
Design<\/td>OTA<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Included accessories<\/strong><\/h4>\n\n\n\n
Section<\/th>Description<\/th><\/tr><\/thead>
Dew cap<\/td>Yes<\/td><\/tr>
Corrector<\/td>Flattener (Flat61R)<\/td><\/tr>
Tube Rings<\/td>Yes<\/td><\/tr>
Dovetail<\/td>Arca-Swiss & Vixen-Style<\/td><\/tr>
Seeker<\/td>Guidescope UniGuide 32mm<\/td><\/tr>
Divergent optics<\/td>No<\/td><\/tr>
Eyepiece adapter<\/td>2\u2033 \/ 1,25\u2033<\/td><\/tr>
Transport case<\/td>No<\/td><\/tr>
Threaded connection<\/td>1\/4\u2033 & 3\/8\u2033<\/td><\/tr>
Transport bag<\/td>Yes<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

General<\/strong><\/h4>\n\n\n\n
Feature<\/th>Description<\/th><\/tr><\/thead>
Series<\/td>ZenithStar<\/td><\/tr>
Color<\/td>Silver<\/td><\/tr>
Application<\/td>Astrophotography, nature observation<\/td><\/tr>
Recommended for<\/td>Advanced<\/td><\/tr>
Observatory use<\/td>No<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"

William Optics AP 61\/360 ZS61 II comes with a UniGuide 32mm guidescope, a flattener, tube rings, Arca-Swiss & Vixen-style dovetail, 2\u2033 to 1.25\u2033 adapter and a soft carrying case. \u00a0<\/p>","protected":false},"featured_media":97360,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[643],"product_cat":[51,567],"product_tag":[],"class_list":["post-33869","product","type-product","status-publish","has-post-thumbnail","product_brand-william-optics","product_cat-telescopen","product_cat-refractors","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":[],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":33858,"url":"https:\/\/staging.telescoop.nl\/en\/william-optics-zenithstar-61-360-apo-ii-ota-2\/","url_meta":{"origin":33869,"position":0},"title":"William 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