92° Series 17mm Long Eye Relief Waterproof Eyepiece Optical Design_Maksutov-Cassegrain provided that the atmospheric seeing

provided that the atmospheric seeing conditions are favorable enough to reveal a sharp image

Your time would be reduced if you are using the USB port to charge a phone or other device

Just add a few eyepieces and the alt-azimuth or equatorial mount of your choice and you’ll be ready to discover the Universe

Great for indoor or outdoor play

while the retractable dew shield enhances portability

92° Series 17mm Long Eye Relief Waterproof Eyepiece Optical Design_Maksutov-Cassegrain provided that the atmospheric seeingExplore Ultra Wide Eyepieces Comfort, Quality, Value. The Explore Scientific 92 Series eyepieces are hyper wide class oculars with extraordinary long eye relief that can transform your visual astronomy experience. You may be startled at the amazingly wide expanse of inky black sky you behold the first time you bring your eye to a 92 Series eyepiece, and after awhile, you may even forget that you have an eyepiece between you and the universe! With an