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Bresser AC 152/1200 Messier Hexafoc Telescope OTA
Supplied without a dedicated mount, the Bresser AC 152/1200 Messier Hexafoc Telescope OTA provides a 152mm achromatic optical tube with 1200mm focal length for independent mounting.
- Standalone 152mm achromatic optical tube
- 1200mm focal length operates at f/7.9
- 2.5-inch Hexafoc focuser handles visual accessories
- 36mm image circle supports listed coverage
- 26mm eyepiece and 8×50 finder included
- 15kg minimum mount capacity is specified
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Description
Balancing resolving power with focal length, the Bresser AC 152/1200 Messier Hexafoc Telescope OTA combines this catalog’s largest common aperture at f/7.9 with a genuinely long focal ratio, built for high-resolution planetary and lunar detail rather than wide fields. This version ships as a bare optical tube, no mount included.
At 11.1kg, this is a serious tube to mount — it needs a high-capacity mount rated for at least 15kg, more than most refractors in this catalog demand. Check that rating carefully before pairing this tube with anything already in your collection, since undersizing the mount here shows up as slow settling and unusable images at this tube’s higher magnifications.
Key Features of Bresser AC 152/1200 Messier Hexafoc Telescope OTA
A 152mm achromatic objective at f/7.9 resolves down to 0.76 arcseconds, reaching a limiting magnitude of 12.7 for genuinely sharp planetary contrast at real aperture.
- 152mm aperture at f/7.9 balances real resolving power with manageable focal length
- 2.5-inch Hexafoc heavy-duty focuser holds a full imaging train steady at this tube’s weight
- 8×50 optical finder scope offers a bright view for locating dimmer deep-sky targets
- Integrated piggyback camera mount lets this tube ride alongside a second scope
- 2-inch zenith mirror accepts wide-field eyepieces for richer views
- Magnification range from 22x to 300x reaches serious planetary detail
- Largest common aperture in this catalog rewards a properly rated high-capacity mount
What Sets the AR-152L/1200 OTA Apart
Every mounted version of this same 152mm tube shares identical optics — this OTA-only version only suits buyers who already own a mount genuinely rated for 15kg or more, since this tube demands more payload capacity than most refractors in this catalog.
Applications & Use Cases
Built as a high-aperture standalone optical tube, this telescope suits high-resolution planetary observation, lunar topography tracking, and bright deep-sky research for an observer with a serious mount already in place.
- Observers who already own a high-capacity mount rated for 15kg or more
- Advanced amateurs wanting serious aperture in a manageable focal ratio
- Anyone chasing the sharpest planetary contrast this catalog’s achromats deliver
Bresser Warranty & Support
The AR-152L/1200 OTA carries a 2-Year Factory Warranty covering manufacturing defects, handled directly through Bresser’s support channel.
Bresser AC 152/1200 Messier Hexafoc Telescope OTA Specs
| Brand | Bresser |
| Full Model Code | Bresser Messier AR-152L/1200 OTA |
| Country of Origin | Germany |
| Optical Design | Achromatic Refractor (Large Aperture Long Tube Configuration) |
| Aperture | 152 mm (6.0 inches) |
| Focal Length | 1200 mm |
| Focal Ratio | f/7.9 |
| Optical Coatings | Multi-Coated Optics |
| Secondary Mirror Obstruction | 0 mm (0%) |
| Secondary Mirror Obstruction by Area | 0% |
| Backfocus Distance | 135 mm |
| Rear Cell Thread Type | M42x0.75 Male T-thread via integrated adapter |
| Image Circle Diameter | 36 mm |
| Resolving Power | 0.76 Arcseconds |
| Limiting Visual Magnitude | 12.7 |
| Highest Useful Magnification | 300x |
| Lowest Useful Magnification | 22x |
| Optical Tube Material | Aluminum |
| Focuser Style & Mechanism | 2.5-inch Hexafoc Heavy-Duty Rack and Pinion Focuser |
| Mirror Lock Mechanism | No (Refractor Tube Configuration) |
| Optical Tube Dimensions | 161 mm x 1275 mm |
| Optical Tube Weight | 11.1 kg (24.47 lbs) |
| Mount Attachment Type | Universal Vixen-Style Dovetail Bar with Stainless Steel Rail Protection |
| Finder Scope Specification | 8x50 Optical Finder Scope |
| Included Accessories | 26mm Super Plossl Eyepiece (46x), 2-inch Zenith Mirror (90-degree), 1.25-inch Reducer Adapter, Heavy-Duty Tube Rings with Carrying Handle and Integrated Piggyback Camera Mount |
| Power Requirements | None |
| Standard Warranty | 2-Year Factory Warranty |
| Application | Custom configuration high-aperture standalone optical tube for high-resolution planetary observations, lunar topography tracking, and bright deep-sky research, requiring a high-capacity tracking mount with a minimum payload of 15 kg. |
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