Celestron AC 70/900 Astromaster 70 EQ
For manual polar tracking, the Celestron AC 70/900 Astromaster 70 EQ pairs a 70mm achromatic refractor with 900mm focal length and CG-2 equatorial adjustment hardware.
- 70mm aperture provides 1.66-arcsecond resolution
- 900mm focal length uses f/12.9 optics
- CG-2 mount includes setting circles
- Slow-motion cables support manual tracking
- 20mm and 10mm eyepieces included
- 1.9kg counterweight and tripod included
In Stock
Description
Coordinate-based lunar observation is the focus of the Celestron AC 70/900 Astromaster 70 EQ, an achromatic refractor featuring a 70 mm aperture, 900 mm focal length, and listed f/12.9 optical ratio. Its CG-2 manual German equatorial mount includes setting circles and slow-motion cables for controlled right-ascension and declination adjustments, while the fully coated optics, 20 mm and 10 mm eyepieces, 90-degree star diagonal, StarPointer finder, steel tripod, accessory tray, and counterweight complete the visual setup.
The long 900 mm optical tube uses a 1.25-inch rack-and-pinion focuser and is supplied with a 90-degree star diagonal for astronomical viewing. The CG-2 mount provides a polar-style coordinate framework for manual tracking, while the 1.9 kg counterweight balances the optical tube within the specified configuration and the included accessories support the listed lunar, planetary, and bright-target observation applications.
Key Features of Celestron AC 70/900 Astromaster 70 EQ
This manual equatorial refractor combines a 70 mm achromatic optical tube with a 900 mm focal length, CG-2 mount, setting circles, slow-motion cables, fully coated glass optics, StarPointer finder, steel tripod, two eyepieces, star diagonal, and counterweight for structured visual astronomy.
- 70 mm achromatic refractor
- 900 mm focal length with listed f/12.9 optical ratio
- CG-2 manual German equatorial mount
- Setting circles and slow-motion cables
- Fully coated glass optics
- 20 mm and 10 mm eyepieces
- 90-degree star diagonal
- StarPointer finder and 1.9 kg counterweight
Manual Polar-Coordinate Tracking
The supplied application focuses on manual right-ascension tracking of lunar coordinates, planets, bright star clusters, and other suitable celestial targets, with the long 900 mm focal length supporting the listed observation format while the CG-2 mount supplies setting circles and slow-motion controls for controlled repositioning.
Included Accessories
The supplied package includes the 70 mm optical tube, CG-2 German equatorial mount, steel tripod, accessory tray, 20 mm and 10 mm eyepieces, 90-degree star diagonal, built-in StarPointer finder, one 1.9 kg counterweight, and the mounting hardware required for the complete AstroMaster 70EQ telescope system.
- 20 mm and 10 mm eyepieces
- 90-degree star diagonal and StarPointer finder
- CG-2 mount, steel tripod, accessory tray, and counterweight
Celestron 2-Year Limited Warranty
The supplied product information lists a 2-year limited warranty for this telescope, and buyers should confirm the current US warranty terms, registration requirements, mount and tripod coverage, accessory coverage, and authorized service process before purchase because AstroMaster equatorial product availability and support conditions can vary by retailer and region.
Celestron AC 70/900 Astromaster 70 EQ Specs
| Brand | Celestron |
| Full Model Code | Celestron AstroMaster 70EQ |
| Country of Origin | United States / China |
| Optical Design | Achromatic Refractor |
| Aperture | 70 mm (2.76 inches) |
| Focal Length | 900 mm |
| Focal Ratio | f/12.9 |
| Optical Coatings | Fully Coated Glass Optics |
| Secondary Mirror Obstruction | 0 mm (0%) |
| Secondary Mirror Obstruction by Area | 0% |
| Resolving Power | 1.66 Arcseconds |
| Limiting Visual Magnitude | 11.7 |
| Highest Useful Magnification | 165x |
| Lowest Useful Magnification | 10x |
| Optical Tube Material | Aluminum |
| Focuser Style & Mechanism | 1.25-inch Standard Rack and Pinion Focuser |
| Mirror Lock Mechanism | No (Refractor Tube Configuration) |
| Optical Tube Dimensions | 85 mm x 914 mm |
| Optical Tube Weight | 2.2 kg (4.85 lbs) - Tube Only |
| Mount Attachment Type | CG-2 Manual German Equatorial Mount with Setting Circles and Slow-Motion Cables |
| Finder Scope Specification | Built-In StarPointer Red Dot Finder |
| Included Accessories | 20mm Standard Eyepiece (45x), 10mm Standard Eyepiece (90x), 90-Degree Star Diagonal (1.25-inch), CG-2 Equatorial Mount, Counterweight (1x 1.9kg), Steel Tube Tripod, Accessory Tray |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Manual right-ascension polar tracking of lunar coordinates, relying on a long f/12.9 chromatic-balanced lens configuration to isolate clear surface transitions without color degradation. |


































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