The celestron firstscope 76 accessory kit is designed to expand your firstscope telescope contains 125 mm eyepiece 125 increases the power to 24x 6 mm eyepiece 125 this eyepiece increases the power to 50x moon filter 125 a moon filter reduces the brightness of the moon and improves contrast so greater detail can be observed on the lunar surface the filter has threads on it which screw into the bottom of the eyepieces 5x24 finderscope bracket this finderscope