William Optics has incorporated an innovative digital readout into its popular dual-speed 2-inch Schmidt-Cassegrain focuser. The new Digital Display Gauge (DDG) SCT Focuser ($248) is designed to thread onto the rear cell of most commercial Schmidt-Cassegrain and Maksutov-Cassegrain telescopes. The DDG and 10-to-1 speed reduction allows precise, repeatable focus, which is displayed with an absolute reading of o.o1 millimeters. A built-in dial thermometer enables you to monitor temperature throughout the evening. The focuser, which can be rotated 360º, has two locking screws for securing the focus position when heavy cameras and accessories are attached. A 1¼-inch adapter is included with purchase.
威廉光学已纳入到其受欢迎的双速2英寸的施密特卡塞格林调焦创新的数字读数。 [size=100%]新的数字显示仪表（副总干事）调焦螺旋CT（248元）的目的是线程到了商业施密特卡塞格林和马克苏托夫-卡塞格林望远镜后方细胞。 [size=100%]该型驱逐舰，10到1减速可以精确，可重复的焦点，这与绝对的o.o1毫米阅读显示。 [size=100%]内置的拨号温度计让您可以监控整个晚上的温度。 [size=100%]调焦，可旋转360度，有两个固定位置时，沉重的焦点相机及配件附加锁螺丝。 [size=100%]1 ¼英寸适配器附带购买。
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