Celestron AC 70/900 Astromaster 70 EQ

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CELESTRON-70900

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
$142.00

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SKU: CELESTRON-70900 Category: Brand:
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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

BrandCelestron
Full Model CodeCelestron AstroMaster 70EQ
Country of OriginUnited States / China
Optical DesignAchromatic Refractor
Aperture70 mm (2.76 inches)
Focal Length900 mm
Focal Ratiof/12.9
Optical CoatingsFully Coated Glass Optics
Secondary Mirror Obstruction0 mm (0%)
Secondary Mirror Obstruction by Area0%
Resolving Power1.66 Arcseconds
Limiting Visual Magnitude11.7
Highest Useful Magnification165x
Lowest Useful Magnification10x
Optical Tube MaterialAluminum
Focuser Style & Mechanism1.25-inch Standard Rack and Pinion Focuser
Mirror Lock MechanismNo (Refractor Tube Configuration)
Optical Tube Dimensions85 mm x 914 mm
Optical Tube Weight2.2 kg (4.85 lbs) - Tube Only
Mount Attachment TypeCG-2 Manual German Equatorial Mount with Setting Circles and Slow-Motion Cables
Finder Scope SpecificationBuilt-In StarPointer Red Dot Finder
Included Accessories20mm 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 Warranty2-Year Limited Warranty
ApplicationManual 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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