{"id":34064,"date":"2025-11-16T15:18:43","date_gmt":"2025-11-16T14:18:43","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=34064"},"modified":"2026-08-23T15:07:36","modified_gmt":"2026-08-23T13:07:36","slug":"william-optics-61mm-2-4-inch-apo-guide-star-guidescope-red","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/william-optics-61mm-2-4-inch-apo-guide-star-guidescope-rood\/","title":{"rendered":"William Optics 61 mm 2.4\u2033 APO Guide Star Guidescope Red"},"content":{"rendered":"

William Optics 61 mm 2.4\u2033 APO Guide Star Guidecope Red: apo guides in red<\/strong><\/h2>\n\n\n\n

The William Optics GuideStar 61 is an apochromatic guidescope featuring a 61 mm (2.4 inch) objective lens with FPL-53 glass. This glass delivers sharp, color-pure star points, and this very sharpness makes guiding more accurate: guiding software can determine the center of gravity of a sharp star more precisely than a blob. Made for guiding refractors with focal lengths from 700 to 1200 mm.<\/p>\n\n\n\n

The helicoidal focusing works via the dew shield: loosen the ribbed counter-ring, slide the hood until the star is in focus, tighten it again. At the rear is an extendable extension tube for extra focus range. This version is red, supplied with a Vixen-style dovetail and carrying bag.<\/p>\n\n\n\n

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Also a mini-astrograph<\/h4>\n\n\n\n

With the readily available Flat61R flattener, the GuideStar 61 becomes a flattened photography lens for small sensors: a complete travel astrograph in addition to its work as a guider.<\/p>\n<\/div>\n<\/div>\n\n\n\n

Included<\/h3>\n\n\n\n