Celestron is changing the way we experience astronomy, but changing the way you interact with the night sky. The Astro Fi 125 Schmidt-Cassegrain is a fully featured telescoped that can be controlled with your smart phone or tablet using the free Celestron SkyPortal app. Using the comprehensive and beautiful interactive star map of the sky, tap the object you want to view on your screen, and your telescope will point to it.125 mm f/10 Schmidt-Cassegrain, perfect for viewing the Moon, planets, and some deep sky objects. The large 125 mm aperture offers incredible resolution and the long focal length, providing amazing high power views of the planets or MoonOnce aligned the motorized Go-To telescope automatically points to and tracks celestial objects of your choice using the Celestron SkyPortal appUsing SkyAlign Technology, it easy to align telescope simply by centering any three bright stars in the skyNo Hand controller required! Just use your smartphone or tablet which connects to the telescope via WiFiFull height, adjustable aluminum tripod provides a stable platform for viewingThe accessory tray holds 2 x 1.25” eyepieces, miscellaneous accessories, including a rubber-lined area for a smart phone or small tabletFree SkyPortal app available; gives full control of the telescope and allows you to find and view objects quicklySpecificationsOptical Design Schmidt-CassegrainAperture (mm) 125 mmFocal Length 1250 mmFocal Ratio 10Eyepieces 25 mm Kellner – 1.25” (50x) 10 mm Kellner – 1.25” (125x)Finderscope StarPointerMount Type Single Fork Arm Computerized AltazimuthTripod AluminumPower Requirements 8-AA batteries (not included)Highest Useful Magnification 295 xLowest Useful Magnification 18 xLimiting Stellar Magnitude 13Resolution (Rayleigh) 1.11arc secondsResolution (Dawes) 0.93 arc secondsLight Gathering Power (Compared to human eye) 329xOptical Coatings StarBright XLTOptical Tube Length 13 inMax Slew Speed 3o/secondTracking Rates Sidereal, Solar and LunarCommunication Ports Aux port for optional hand controlIncluded Items/Accessories: 25 mm Kellner Eyepiece, 10 mm Kellner Eyepiece, StarPointer Finderscope, 1.25” Star Diagonal, Battery Pack