Add to the knowledge base of your SkyScout Personal Planetarium (sold separately) with the Celestron All About the Stars SD expansion card. Addresses many stargazing questions, such as: What will happen to the sun when it runs out of energy? Why are stars different colors? What happens when galaxies collide?. Topics include astronomical trivia, stellar evolution, and the luminosity, magnitude and color of stars.

High-quality Maksutov-Cassegrain optics make the NexStar 4SE an ideal tool for exploring and photographing the wonders of space. Precision optical system with 1,325mm focal length (f/13) features premium StarBright XLT coatings. Includes a camera control feature that lets you take a series of timed exposures remotely, using your digital SLR camera. Flip mirror control, straight-through photographic port and built-in wedge help make short-exposure photography a breeze. SkyAlign?äó technology and SkyPointer Finderscope make aligning telescope to locate stars easy?Çöyou don't even have to know the stars' names! Pre-assembled, heavy-duty, stainless-steel tripod and quick-release fork mount connect without the use of tools. Quick-release fork arm mount, optical tube and accessory tray for tool-free setup. Comes with ''The Sky'' Level 1 Astronomy CD-ROM to help you identify 10,000 celestial objects using your home computer; features printable sky maps. NexRemote telescope control software and RS-232 cable included for advanced control of your telescope via computer.

The compact Celestron SkyScout speaker amplifies the audio from your SkyScout Personal Planetarium (sold separately)?Çöperfect for group viewing. Lithium ion battery recharges from USB port on any computer. Extension cable allows speaker to be placed strategically when in use. Lanyard allows speaker to hang from your neck for hands-free convenience. Expandable woofer enhances sound clarity and quality.