Product Description: Digital Eyepiece for Telescope - for viewing and recording via computer Imaging Sensor: 1/4 Inch 1.3 Megapixel CMOS Pixel Size 2.8?m x 2.8?m Connection to Telescope: Ocular tube Size of Ocular Tube: 17mm, 25mm and 30mm (using included adapters) Still Image - Format: JPEG, BMP - Resolution: Max - 1280x1024 Video - Format: WMV - Resolution: Max - 1280x1024 - FPS: 16 Sensitivity:1.0 V/Lux-sec Spectrum response 400nm - 1000nm White Balance: Auto PC Interface: USB 2.0 Shutter: ERS(electronic rolling shutter) Power Source: USB port of computer Dimensions: L: 65 x Diameter: 65 (mm) Compatible Systems: Windows 2000, XP, Vista, 7 (32 bit version only) Manufacturers Ref: XGNCJ788SQWD If you're looking for a way to capture and save your favorite images from the moon, stars, planets, or galaxies, then you've found the right product. Astronomer's new best friend This easy to use digital eyepiece for telescopes connects to the USB port on your computer and gives you a real-time image from your telescope-- directly on your computer screen! This is the best way to view high resolution images of the moon, stars, sun, solar systems and more, and without having to bend over your telescope and squint with one eye to enjoy the heavenly attractions. If you own a telescope then this digital eyepiece will make using your telescope easy and fun again for the whole family. High Quality Images The image quality of this digital eyepiece is simply amazing too. This is because the G227 uses a 1/4 inch 1.3 megapixel image sensor for delivering high image quality and remarkable detail like you have never seen before. Included with this digital eyepiece is a DVR software kit for recording those beautiful images in 1280x1040 video or photos. This makes sharing your high resolution images with your friends, family, or the internet, easier and more enjoyable than ever.