Bresser AC 90/900 Messier Nano AZ Telescope
Built for manual alt-azimuth observation, the Bresser AC 90/900 Messier Nano AZ Telescope combines a 90mm long-focus refractor with a NANO mount and stainless-steel tripod.
- NANO AZ mount provides manual alt-azimuth movement
- 90mm aperture supports long-focus observation
- 900mm focal length uses f/10 optics
- 26mm eyepiece provides listed 34x magnification
- 6×30 finder and stainless tripod included
- Vixen rings and handle are included
In Stock
Description
Skipping polar alignment entirely, the Bresser AC 90/900 Messier Nano AZ Telescope mounts this same 90mm long-focus tube on a simple alt-azimuth single fork — point up-down and left-right, no equatorial setup ritual required before a session under the stars.
Every other mount bundled with this tube is an equatorial design needing rough polar alignment. The Nano AZ trades that tracking precision for genuine setup speed, a fair swap for casual lunar and planetary looks where you’re not tracking a target for an extended session. The stainless steel tripod still keeps the view steady despite the mount’s deliberately simple, alignment-free design built for speed over sustained precision.
Key Features of Bresser AC 90/900 Messier Nano AZ Telescope
A single-fork alt-azimuth design skips the polar alignment step every equatorial mount sharing this optical tube requires, trading tracking duration for genuine setup speed.
- Alt-azimuth single-fork design points and tracks without polar alignment
- Stainless steel field tripod keeps the setup steady despite the mount’s simplicity
- Accessory tray and Vixen-style tube rings with a carrying handle round out the package
- Included 26mm Super Plossl eyepiece delivers 34x magnification right out of the box
- Fastest setup time of any mount bundled with this optical tube
- Magnification range from 13x to 180x reaches genuine planetary detail
- No batteries or polar-alignment learning curve required before a session
What Makes the Nano AZ Different
Every other mount option for this same 90mm tube is an equatorial design built around polar alignment. The Nano AZ is the outlier: simple, fast setup at the cost of smooth long-session tracking, the right trade for quick casual looks at the Moon and bright planets rather than an extended tracked observation.
Applications & Use Cases
Built for stable, clear grab-and-go manual tracking of bright celestial targets, this telescope pairs a simple alt-azimuth structure with a rigid stainless steel tripod for reliable casual use.
- Casual observers who want setup speed over precise equatorial tracking
- Households wanting quick lunar and planetary looks without polar alignment
- Anyone who values simplicity over the tracking precision an equatorial mount offers
Bresser Warranty & Support
The AR-90L/900 Nano AZ carries a 2-Year Factory Warranty covering manufacturing defects, handled directly through Bresser’s support channel.
Bresser AC 90/900 Messier Nano AZ Telescope Specs
| Brand | Bresser |
| Full Model Code | Bresser Messier AR-90L/900 NANO AZ |
| Country of Origin | Germany |
| Optical Design | Achromatic Refractor |
| Aperture | 90 mm (3.54 inches) |
| Focal Length | 900 mm |
| Focal Ratio | f/10 |
| Optical Coatings | Multi-Coated Optics |
| Secondary Mirror Obstruction | 0 mm (0%) |
| Secondary Mirror Obstruction by Area | 0% |
| Backfocus Distance | 120 mm |
| Rear Cell Thread Type | M42x0.75 Male T-thread via integrated adapter |
| Image Circle Diameter | 30 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 | 2.5-inch Hexafoc Heavy-Duty Rack and Pinion Focuser |
| Mirror Lock Mechanism | No (Refractor Tube Configuration) |
| Optical Tube Dimensions | 93 mm x 900 mm |
| Optical Tube Weight | 3.2 kg (7.05 lbs) - Tube Only |
| Mount Attachment Type | NANO Alt-Azimuth Single-Fork Mount with Stainless Steel Field Tripod |
| Finder Scope Specification | 6x30 Optical Finder Scope |
| Included Accessories | 26mm Super Plossl Eyepiece (34x), 1.25-inch Zenith Mirror (90-degree), NANO Alt-Azimuth Mount, Stainless Steel Tripod, Accessory Tray, Vixen-Style Tube Rings with Handle |
| Standard Warranty | 2-Year Factory Warranty |
| Application | Stable and clear grab-and-go manual tracking for bright celestial targets, providing a simple altitude-azimuth structural configuration combined with a rigid stainless steel tripod base. |






























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