Celestron AstroMaster 70AZ Telescope
- 70mm (2.76") Refractor Telescope
- 900mm Focal Length
- f/13 Focal Ratio
- Manual Alt-Azimuth Mount
- Includes 45x and 90x Eyepieces
- 100x More Light Gathering Power Than the Human Eye
The Celestron AstroMaster 70AZ Telescope combines a 70mm refractor optical tube with a long 900mm focal length for high-contrast views of the solar system. This f/13 system gathers 100x more light than the human eye, resolving details down to 1.66 arc seconds with a limiting stellar magnitude of 11.7. The full kit weighs just 10.8 lbs, making it a portable and straightforward gateway to nighttime observing.
The core of the AstroMaster 70AZ is its 70mm achromatic refractor. The long f/13 focal ratio minimizes chromatic aberration (false color), producing sharper, higher-contrast images of bright objects like the Moon, Jupiter, and Saturn. This design is ideal for learning the fundamentals of planetary observation without the complexities of collimation required by reflector telescopes.
Setting up the AstroMaster 70AZ is simple thanks to the pre-assembled tripod and manual alt-azimuth mount. The intuitive pan-handle control allows you to smoothly move the telescope up, down, left, and right to track celestial objects as they drift across the sky. The entire mount and tripod assembly weighs only 7.9 lbs, making it easy to carry to your favorite dark-sky location.
This telescope package includes everything you need for your first night out. You get two eyepieces: a 20mm for wide-field views at 45x magnification and a 10mm for higher-power views at 90x. The included erect image diagonal ensures that your views are correctly oriented, making the telescope equally useful for terrestrial daytime viewing of landscapes and wildlife.
The AstroMaster 70AZ is excellent for bright solar system objects. You can expect to see detailed craters and mountains on the Moon, the four Galilean moons of Jupiter, the rings of Saturn, and the phases of Venus. Brighter deep-sky objects like the Orion Nebula (M42) and the Andromeda Galaxy (M31) will be visible as faint smudges from a dark location.
Yes, its no-tool setup and simple point-and-look manual mount make it very user-friendly for beginners and children, with adult supervision. The total kit weighs only 10.8 lbs, making it easy to transport and set up. The erect image diagonal also allows for intuitive daytime use.
You use the included StarPointer™ red dot finderscope. After a simple alignment process, you look through the finder and move the telescope until the red dot is on your target. Then, when you look in the eyepiece, the object will be in your field of view. The included Starry Night software will help you learn where to point the telescope.
The AstroMaster 70AZ is designed for visual observation. While you can hold a smartphone up to the eyepiece to take basic photos of the Moon, the manual alt-azimuth mount does not track the stars, making it unsuitable for long-exposure astrophotography of faint deep-sky objects.
The two eyepieces provide different magnifications. The 20mm eyepiece gives a lower magnification of 45x, which provides a wider field of view for finding objects and observing large star clusters. The 10mm eyepiece provides a higher magnification of 90x, which is better for viewing details on planets and the Moon.
Never look at the Sun through a telescope without a certified, full-aperture solar filter that covers the front of the telescope. Looking at the sun without the proper filter will cause permanent and irreversible eye damage. This telescope does not include a solar filter.
| Optical Design | Refractor |
| Aperture | 70mm (2.76") |
| Focal Length | 900mm (35") |
| Focal Ratio | f/13 |
| Eyepiece 1 | 20mm (45x Magnification) |
| Eyepiece 2 | 10mm (90x Magnification) |
| Finderscope | StarPointer™ red dot finderscope |
| Star Diagonal | Erect Image Diagonal - 1.25" |
| Highest Useful Magnification | 165x |
| Lowest Useful Magnification | 10x |
| Limiting Stellar Magnitude | 11.7 |
| Resolution (Rayleigh) | 1.99 arc seconds |
| Resolution (Dawes) | 1.66 arc seconds |
| Light Gathering Power | 100x (Compared to human eye) |
| Optical Coatings | Fully Coated |
| Optical Tube Length | 685mm (27") |
| Optical Tube Weight | 2.9 lbs (1.31 kg) |
| Mount Type | Manual Alt Azimuth |
| Tripod | 1.25" Steel Legs |
| Height Adjustment Range | 812.8mm - 1295.4mm (32" - 51") |
| Dovetail Compatibility | CG-5 saddle plate |
| Total Kit Weight | 10.8 lbs (4.9 kg) |
| Software | Celestron Starry Night Basic Edition Software, SkyPortal App |
AstroMaster 70AZ Optical Tube
× 1
Tripod and Mount (preassembled)
× 1
20mm Eyepiece
× 1
10mm Eyepiece
× 1
StarPointer™ Red Dot Finderscope
× 1
Erect Image 90° Diagonal
× 1
Accessory Tray
× 1
Instruction Manual
× 1