Bresser MC 90/1250 Messier Maksutov OTA
As an independent optical tube, the Bresser MC 90/1250 Messier Maksutov OTA provides a 90mm Maksutov-Cassegrain system with 1250mm focal length and compact Vixen-style mounting.
- Standalone 90mm Maksutov optical tube
- 1250mm focal length uses f/13.9 optics
- 26mm image circle supports listed coverage
- Internal mirror focuser provides optical adjustment
- 26mm eyepiece and Vixen dovetail included
- 1.4kg tube weight is specified
In Stock
Description
Packing serious portability, the Bresser MC 90/1250 Messier Maksutov OTA is the most travel-friendly tube in Bresser’s Maksutov line at just 1.4kg — sealed against dust, no collimation needed, and small enough to fit in a carry-on alongside other gear. This version ships as a bare optical tube, no mount included.
An f/13.9 ratio like this one trades field width for planetary detail, and at this weight, almost any lightweight travel tripod or camera-style head can carry it via the Vixen-style dovetail plate. The internal primary mirror focusing system also means there’s nothing external to snag or misalign during transport, a real advantage for a tube that’s meant to travel often.
Key Features of Bresser MC 90/1250 Messier Maksutov OTA
A 90mm Maksutov-Cassegrain design resolves down to 1.28 arcseconds at f/13.9, reaching a limiting magnitude of 11.6 for sharp planetary contrast in a genuinely compact package.
- At just 1.4kg, this is the lightest Maksutov tube in this catalog
- Sealed catadioptric design needs zero collimation, ever
- Internal primary mirror focusing system leaves no external moving parts to misalign
- LED red dot finder locates bright targets fast without an optical eyepiece to align
- Included 26mm Super Plossl eyepiece delivers 48x magnification right out of the box
- Magnification range from 13x to 180x reaches genuine planetary detail
- Carry-on-friendly size suits an observer who travels with their telescope often
What Sets the MC-90/1250 OTA Apart
Against the larger 100mm, 127mm, and 152mm Maksutovs in this catalog, this 90mm tube trades some resolving power for genuine travel portability — the lightest option if packing space and weight matter more than maximum aperture.
Applications & Use Cases
Built as an ultra-compact travel optical tube, this telescope suits clean planetary tracking, high-contrast lunar inspection, and space-saving quick visual checks for a frequent traveler.
- Travelers wanting the lightest possible Maksutov in this catalog
- Observers who already own a lightweight compatible mount
- Anyone prioritizing pack size over maximum aperture
Bresser Warranty & Support
The MC-90/1250 OTA carries a 2-Year Factory Warranty covering manufacturing defects, handled directly through Bresser’s support channel.
Bresser MC 90/1250 Messier Maksutov OTA Specs
| Brand | Bresser |
| Full Model Code | Bresser Messier MC-90/1250 OTA |
| Country of Origin | Germany |
| Optical Design | Maksutov-Cassegrain |
| Aperture | 90 mm (3.54 inches) |
| Focal Length | 1250 mm |
| Focal Ratio | f/13.9 |
| Optical Coatings | Multi-Coated Optics |
| Secondary Mirror Obstruction | 29 mm |
| Secondary Mirror Obstruction by Area | 10.4% |
| Backfocus Distance | 90 mm |
| Image Circle Diameter | 26 mm |
| Resolving Power | 1.28 Arcseconds |
| Limiting Visual Magnitude | 11.6 |
| Highest Useful Magnification | 180x |
| Lowest Useful Magnification | 13x |
| Optical Tube Material | Aluminum |
| Focuser Style & Mechanism | Internal Primary Mirror Moving Focuser System |
| Mirror Lock Mechanism | No |
| Optical Tube Dimensions | 100 mm x 280 mm |
| Optical Tube Weight | 1.4 kg (3.09 lbs) |
| Mount Attachment Type | Universal Vixen-Style Dovetail Bar with Stainless Steel Rail Protection |
| Finder Scope Specification | LED Red Dot Finder |
| Included Accessories | 26mm Super Plossl Eyepiece (48x), 1.25-inch Zenith Mirror (90-degree), Vixen-Style Dovetail Plate |
| Power Requirements | 3V CR2032 Lithium battery for Red Dot Finder |
| Standard Warranty | 2-Year Factory Warranty |
| Application | Ultra-compact standalone travel optical tube optimized for clean planetary tracking, high-contrast moon inspections, and space-saving quick visual verification setups. |

























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