The 1280 Filter Holder allows you to mount 1 inch diameter filters using either an included Delrin® ring or a setscrew depending upon filter thickness. Since they screw directly onto the New Focus detector housing, no unwanted light can reach the photodetector itself. This accessory is especially useful when using narrowband filters with our femtowatt receivers.

1280滤光片夹可以挂载1英寸直径的过滤器使用一个包含缩醛树脂®环或固定螺丝钉厚度取决于过滤器。由于它们直接旋在新的焦探测器外壳上，所以不需要的光不能到达光电探测器本身。当我们的飞瓦特接收器使用窄带滤波器时，这个附件特别有用。