The 15mm medium power Omni eyepiece is a 4 -element premium symmetrical Pl�ssl optical design. Features include blackened lens edges to minimize internal reflection and maximize contrast, multi-layer coating group on each lens surface to maximize light transmission and contrast, and each Omni goes through a two-step anodizing process to prevent reflection from the top eyepiece barrel, unlike most other manufactures who use reflective surfaces. Threaded barrels accept 1-1/4" Celestron thread-in filters.

For all Schmidt-Cassegrains. It threads onto the rear cell. A T-Adapter allows you to attach your 35mm SLR camera to the prime focus of your telescope or spotting scope. This arrangement is used for terrestrial photography and short exposure lunar and planetary photography. It can also be used for long exposure deep-sky photography when using a separate guidescope. Both a T-Adapter and T-Ring are required to mount a 35mm SLR camera to your instrument.

Featuring high-quality Maksutov-Cassegrain optics, the NexStar 4SE is an ideal telescope for observing and photographing the wonders of space. With a total weight of 21 lbs including the tripod, the ultra portable 4 SE features a precision optical system with 1,325 mm focal length (f/13) and is the first Maksutov system to ever feature our premium StarBright XLT coatings.

The 4 SE includes a camera control feature that allows you to remotely take a series of timed exposures using your digital SLR camera. Additional features includes a�Flip Mirror Control, Straight Through Photographic Port and Tripod featuring a built-in wedge help make short-exposure astrophotography a heavenly experience.

The NexStar 4 SE has all the same features as Celestron's most advanced computerized GoTo telescopes, including our revolutionary SkyAlign alignment technology, a sky tour feature, a database of nearly 40,000 celestial objects and easy to use hand control.

Plug the optional SkySync GPS Accessory into NexStar�s Auxiliary port and download data from orbiting GPS satellites for truly quick and easy alignments. The universe may be full of mysteries, but using the NexStar 4 SE isn't one of them.

In the tradition of Celestron's famous orange optical tubes, the new NexStar SE Family combines the classic heritage of the original orange tube telescopes with state-of-the-art features including a fully computerized operating system, flash upgradeable hand control, our superior StarBright XLT coatings, our revolutionary SkyAlign telescope alignment software and much more.

Whether you are a seasoned astronomer looking for a portable scope with advanced features, or just starting your astronomy adventure and looking for an easy way to enjoy the night sky, a NexStar SE will help you take a closer look.

Every NexStar SE includes a version of The Sky software Level 1 Planetarium software for exploring the Universe on your PC and printing out custom star charts of the sky. In addition, you receive our NexRemote software that allows you to operate your telescope via your PC.

Capture high-resolution planetary, lunar and solar images with almost any telescope with the NexImage 5 Solar System Imager. Combined with the included software package, NexImage 5 brings out tremendous detail and produces images rivaling those taken with astronomical cameras costing hundreds more.

Simply point your telescope at the Moon or a planet and record a quick video. The included software analyzes each frame of video, throws away the fuzzy ones, and perfectly aligns the remaining images. The result is a bright, clear image with the maximum amount of color and detail. NexImage 5 is a great way to get started with astroimaging, especially if you live in a light-polluted area. If you can see the planet the sky, you can image it with NexImage 5!

- 5 Mega pixel color sensor with Micron® DigitalClarity® technology to dramatically reduce image noise levels
- Software automatically filters out video frames most affected by poor atmospheric conditions, leaving only the sharpest, clearest frames to be stacked and aligned into one high-quality image
- View and capture live video on your computer
- Manually adjust gain, contrast, exposure time, frame rate and color saturation using your PC
- Machined aluminum 1.25" adapter barrel with C-threads for direct threaded connection to almost any telescope