iOptron 70mm f/12.9 Doublet Refracting Telescope

  • Aperture: 70mm (2.7")
  • Focal Ratio: f/12.8
  • Focal Length: 900mm
  • Excellent value visual telescope
  • Sale
  • Regular price $99.00

More on the Way in 14 - 28 Business Days

Free Shipping
Add to Wishlist
Already have gear? Trade it in for cash or new equipment.

Accessories Added

OPT Telescope Expert

Want Help?

Ask Our Telescope Experts


iOptron 70mm f/12.9 Doublet Refracting Telescope

iOptron's 70x900 Refractor is a great value option for a new astronomer looking to take a first peek into the majesty of the night sky. The 70x900 from iOptron is well suited to lunar and planetary observation, and can also be used for terrestrial viewing such as bird watching. 70x900 stands for 70mm aperture, 900mm focal length. This results in a f/12.8 focal ratio which is great for observation, but not suitable for imaging. The long focal length and relatively solid aperture combine to permit detailed observation of the moon and planetary targets in our solar system.


Aperture70 mm (2.75")
Camera/Eyepiece Connection1.25 Inch Barrel
Dawes Limit1.66 arcseconds
Focal Length900 mm
Focal Ratiof/12.9
Free ShippingYes
Limiting Magnitude13
Optical DesignDoublet
Tube Weight14.5 lbs
Warranty1 Year Warranty


  • 70x900 Achromatic Refractor OTA
  • EQ-2 German Equatorial Mount
  • Aluminum Tripod
  • 90 Degree Star Diagonal 1.25"
  • 12.5mm Eyepiece
  • 20mm Eyepiece
  • Rack and Pinion Focuser