{"id":33858,"date":"2025-11-15T13:14:14","date_gmt":"2025-11-15T12:14:14","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=33858"},"modified":"2026-03-04T17:03:45","modified_gmt":"2026-03-04T16:03:45","slug":"william-optics-zenithstar-61-360-apo-ii-ota-2","status":"publish","type":"product","link":"https:\/\/staging.telescoop.nl\/en\/william-optics-zenithstar-61-360-apo-ii-ota-2\/","title":{"rendered":"William Optics ZenithStar 61\/360 APO II OTA"},"content":{"rendered":"

William Optics AP 61\/360 ZS61 II - Small, light and surprisingly powerful<\/strong><\/h3>\n\n\n\n

The William Optics AP 61\/360 ZS61 II<\/strong> gives you clear, sharp and colorful images in a super-compact design. You set it up quickly, focus easily and get instant results. Perfect if you like to travel, want to carry little weight or are just looking for a small but strong apo for photos and visual sessions.<\/p>\n\n\n\n

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

Big picture in a small telescope<\/strong><\/h3>\n\n\n\n

The 61 mm aperture and 360 mm focal length give you a wide and clear image. You see a lot at once, making it easy to capture the Moon, star fields or large nebulae. The low weight makes the telescope ideal for traveling. You use it on a lightweight mount or even on a photo tripod.<\/p>\n\n\n\n

Bright color contrast thanks to FPL-53 glass<\/strong><\/h3>\n\n\n\n

The lens uses FPL-53, the high-quality glass that helps you keep colors really clean. You get no purple edges and no distortion. Everything stays clean, so your photos instantly look better. You see the difference immediately when you photograph stars: round, bright and neatly distributed across the entire image.<\/p>\n\n\n\n

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

Easy focusing, even with large cameras<\/strong><\/h3>\n\n\n\n

The focuser works firmly and accurately. The 1:10 fine adjustment makes it easy to focus, even when working with long exposures. The telescope remains stable, so your image won't shift when you rotate the camera or add accessories.<\/p>\n\n\n\n

Perfect for astrophotos as well as nature images<\/strong><\/h3>\n\n\n\n

The large field of view makes it versatile. You photograph the entire Moon in one shot. You take solar images with a safe filter. And you also use the telescope during the day for nature and landscapes.
The included Flat61R flattener makes your photos tight all the way to the corners. So everything stays sharp-even if you're using a full-frame camera.<\/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<\/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>Without<\/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>Gold<\/td><\/tr>
Application<\/td>Astrophotography, nature observation<\/td><\/tr>
Recommended for<\/td>Advanced<\/td><\/tr>
Observatorian<\/td>No<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

<\/p>","protected":false},"excerpt":{"rendered":"

William Optics AP 61\/360 ZS61 II comes with a Flat61R image field equalizer, tube rings, Arca-Swiss & Vixen-style dovetail, 2\u2033 to 1.25\u2033 adapter and a soft carrying case.<\/p>\n

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