Omegon Maksutov Flip-mirror 90/1250 OTA - astronomical telescope
Looking for a telescope that fits in a backpack, delivers sharp planetary images and lets you switch between visual observation and astrophotography without compromise? The Omegon Maksutov 90/1250 OTA with integrated flip-mirror system is exactly that choice. This telescope is not a beginner's toy - it is a serious optical instrument for advanced astronomers who value practicality in the field as much as image quality when observing demanding Solar System objects.
Optical design and performance
The Maksutov design combines a meniscus lens with a spherical mirror, which effectively suppresses spherical aberration and coma. The result is a sharp, high-contrast image across the entire field of view - a quality that planetary observers will appreciate when looking at Saturn's rings, Jupiter's cloud bands or lunar craters.
An aperture of 90 mm with a focal length of 1250 mm gives a focal ratio of f/13.9, which is a typical value for Maksutov telescopes designed for high-magnification planetary observation. The telescope offers a maximum useful magnification of 180x and a resolving power of 1.28 arcseconds, which can reveal a surprising amount of detail at a quality observing site. The limiting stellar magnitude of 11.6 mag indicates that bright deep-sky objects - globular clusters or bright planetary nebulae - are also within reach, especially under a dark sky away from the city.
Focusing is achieved by moving the primary mirror. The tube is fully enclosed (full tube), and the anti-reflection coating on the optics reduces unwanted light scatter.
Flip-mirror system - seamless switching between eye and camera
The key feature of this OTA is the flip-mirror - a movable mirror that allows you to redirect the light path between the eyepiece and a camera in just a few seconds. The eyepiece can be connected either at a 90° angle, as with a classic zenith diagonal, for comfortable visual observation, or directly in-line for imaging.
The flip-mirror system also accepts an Amici prism or a standard star diagonal with 1.25″ connection. This flexibility is a major advantage during group observation sessions or when you want to record with a camera while continuously checking focus by eye. Switching does not disturb the connected camera or imaging setup, so your workflow remains natural and fast.
Portability and build quality
This travel Maksutov weighs only 1.6 kg, making it one of the lightest serious planetary telescopes on the market. The fully enclosed tube protects the optics from dust and condensation without the need for frequent maintenance.
What is included in the package
- Omegon Maksutov Flip-mirror 90/1250 OTA tube
- 5x24 finder scope for easy target acquisition
- Carry bag for transport
Please note that no mount is included (OTA version only). The telescope is designed to be compatible with standard photographic and astronomical heads and mounts via a Vixen-compatible dovetail bar. You receive the optical tube assembly alone, and you choose the mount to suit your own needs and observing style.
Technical specifications
| Parameter |
Value |
| Optical design |
Maksutov-Cassegrain |
| Aperture |
90 mm |
| Focal length |
1250 mm |
| Focal ratio |
f/13.9 |
| Maximum useful magnification |
180x |
| Resolving power |
1.28 arcseconds |
| Limiting stellar magnitude |
11.6 mag |
| Eyepiece connection |
1.25″ |
| Focuser type |
Primary mirror shift |
| Tube type |
Fully enclosed (full tube) |
| Dovetail |
Vixen-compatible |
| Weight |
1.6 kg |
| Mount |
Not included (OTA only) |
Who is this telescope for?
The Omegon Maksutov Flip-mirror 90/1250 OTA is an ideal choice for the advanced observer who wants a compact, optically excellent instrument in their backpack for planetary observation, without making compromises when it comes to astrophotography. It is a great fit for field trips, astronomy club meetings or as a secondary OTA on a large mount. If you are looking for a flexible, durable and portable Maksutov with a well-thought-out flip-mirror system, this is the right choice.
