Eight inch flashlight with a guide in your pocket
The Celestron StarSense Explorer Dobson 203 mm couples an adult 8-inch mirror to the proven StarSense Explorer app. The 203 mm parabolic mirror captures 841 times more light than the naked eye. This brings galaxies, nebulae, and globular clusters well within reach. Beginners appreciate the simplicity of the app navigation; experienced observers enjoy the light gathering power and ease of use.
Plate solving as in the observatory
The StarSense Explorer app uses the same method as professional observatories: plate solving. Your smartphone photographs the sky, recognizes the star patterns, and knows exactly where the telescope is pointed. Arrows guide you to your target, from the Ring Nebula to the Sombrero Galaxy. In minutes, you can find objects that would otherwise take you nights to locate.
Full-featured Dobsonian telescope with 2-inch focuser
This is no longer a table model: the 203 mm sits on its own rocker box on the ground, at a comfortable viewing height. The 2-inch Crayford focuser with a 1.25-inch adapter also accepts wide-field eyepieces. The included 25 mm eyepiece delivers 48x; realistically usable up to around 400x under very calm skies. In Dutch practice, the limit for planets is usually around 250 to 300x.
Wearable in two parts
You lift the optical tube and the rocker box off separately. This way, you can move a full-fledged 8-inch telescope to the garden or car by yourself. Setup takes less than a minute: hang the tube in the mount, place your phone in the dock, and start observing. The included collimation cap keeps the mirror perfectly aligned.
What's in the box?
- Optical tube 203/1200 with parabolic mirror
- Dobson-rockerbox
- StarSense smartphone dock
- 25 mm eyepiece
- 2 inch Crayford focuser with 1.25 inch adapter
- Red dot viewfinder
- Collimation cap
- StarSense Explorer app unlock code
Recommended accessory
- A moon filter (1.25 inch) With an 8-inch telescope, it's practically mandatory: without a filter, the full moon is dazzlingly bright.
| Specification | Celestron StarSense Explorer Dobson 203 mm |
| Optical design | Newton reflector (parabolic) |
| Mirror opening | 203 mm (8 inches) |
| Focal length | 1200 mm |
| Opening ratio | f/5,9 |
| Maximum useful magnification | 406x |
| Light output | 841 times relative to the naked eye |
| Mount | Dobson model (azimuthal) |
| Ocular | 25 millimeters (48x) |
| Focuser | 2 inch Crayford with 1.25 inch adapter |
| Navigation | StarSense Explorer App (iOS and Android) |
Still unsure about the right model? Our Buyer's guide for beginners and the telescope selection aid help you step by step. Also check out all the Dobson telescopes or the full range on the Celestron merk Page. You can read more background information about the merk in the Celestron merk Guide.
Linda Romviel (verified owner) -
I've had this telescope for a while now. It's quite a unit, and I was initially taken aback by its size. But I've gotten used to it, and with telescopes, bigger (more light) usually means better. What I can see with this telescope from my small garden in the middle of a residential area is truly amazing. It can bring planets in really close, and you can get lost in the most beautiful star clusters. With the help of the Starsense app that comes with it, you can find even the smallest deep-sky objects without any problems. Because you're actively involved in searching, you also get better at navigating yourself over time. I don't need the app all that often anymore.