SIGHTRON 0.75x Reducer (American Size / 31.7mm) This reducer attaches to the nosepiece of an astronomical CMOS camera, allowing for a wider field of view. It is suitable for electronic assisted observing with F5-F6 achromatic refractors. I have used it a few times, but I am selling it due to equipment organization (decluttering). 【Condition】 • I believe the appearance and lens surfaces are in beautiful condition, subjectively. 【Features】 • American size (31.7mm diameter) allows for easy attachment to many telescopes and CMOS cameras. • Convenient for securing the field of view in electronic assisted observing. • Information such as whether or not focus can be achieved depending on the optical system is listed on the Schmidt company's homepage. We recommend that you check before purchasing. Thank you for your understanding that this is a used item. #Telescope #Reducer #SIGHTRON #SIGHTRON #ElectronicAssistedObserving #CMOSCamera #AmericanSize