Celestron Nexstar 4SE Computerized Telescope

High-Contrast 102mm f/13 Maksutov-Cassegrain Optics

The 4SE's 102mm Maksutov-Cassegrain optical design excels at high-magnification views of bright, detailed targets. The f/13 focal ratio and 1325mm focal length are engineered to reveal sharp details on the Moon's surface, the cloud bands of Jupiter, and the Cassini Division in Saturn's rings. With a light-gathering power 212 times that of the human eye and StarBright XLT coatings for maximum transmission, this telescope resolves details down to 1.14 arc seconds.

An integrated internal flip mirror system adds modern convenience, allowing you to switch between the 90-degree star diagonal for visual use and a straight-through light path for photography without removing your accessories. This makes it simple to transition from observing to imaging in seconds.

NexStar+ GoTo with a 38,181 Object Database

At the heart of the NexStar 4SE is its computerized GoTo system, designed for intuitive object location and tracking. The NexStar+ hand control gives you access to a database of 38,181 objects, including galaxies, nebulae, and star clusters. After a simple SkyAlign procedure—just center any three bright objects in the eyepiece—the telescope knows its position and can slew to any target you choose from its extensive catalog.

• SkyAlign Technology: Fast, easy, and requires no prior knowledge of the night sky. The telescope does the work of identifying the alignment stars.
• 9 Slew Speeds: Move across the sky at up to 3 degrees per second to quickly locate objects, or use finer speeds to precisely center them in the eyepiece.
• Sidereal, Solar, and Lunar Tracking: The DC servo motors automatically track celestial objects as they move across the sky, keeping your target centered for extended observation.

Patented Fork Arm Mount for 23 lb Portability

The best telescope is the one you use most often, and the NexStar 4SE is built to get outside. The entire system weighs only 23 lbs and breaks down into three manageable components: the 6 lb optical tube, the 7 lb mount head, and the 10 lb stainless steel tripod. This modular design makes it easy to transport and set up in minutes, whether in your backyard or at a remote dark-sky site.

The patented single fork arm mount provides a rigid, vibration-free platform for the optics while keeping the overall footprint small. The included accessory tray holds your eyepieces and strengthens the tripod legs for added stability during observation.

NexStar 4SE vs. 5SE: Aperture and Application

The NexStar 5SE offers a larger 125mm aperture, giving it a significant advantage in light-gathering power for viewing fainter deep-sky objects. However, the 4SE's smaller Maksutov-Cassegrain optics present their own distinct advantages that make it a compelling choice.

• Planetary and Lunar Focus: The 4SE's longer f/13 focal ratio (compared to the 5SE's f/10) provides higher native magnification for a given eyepiece, making it exceptionally well-suited for detailed views of the Moon and planets.
• Faster Cooldown: The smaller, enclosed Maksutov optics of the 4SE acclimate to ambient temperatures more quickly, meaning you spend less time waiting for a stable image.
• Portability: While both models are portable, the 4SE's lighter 6 lb optical tube and smaller overall profile make it even easier to transport and handle, especially for younger astronomers or those with limited storage space.