Explore Scientific


Explore Scientific FirstLight 80mm f/8 Refractor on Twilight Nano Alt-Azimuth Mount

The Explore Scientific FirstLight 80mm f/8 Alt-Az Refractor Telescope combines portability and simplicity to provide new users with a complete observational platform for viewing the moon and planets.

The scope features the manual Twilight Nano alt-azimuth mount with dual-axis control cables that allow users to track objects as they move across the night sky.


  • Fully multi-coated optics improves light transmission for increased image contrast and brightness
  • 40mm drawtube helps to reduce vignetting with larger imaging sensors or wide-field eyepieces; 1.25" holder accepts the most popular sized eyepieces and accessories
  • Sturdy rack-and-pinion focuser
  • Quick-detach Vixen-style dovetail saddle
  • Manual alt-azimuth single-arm fork mount

Accessories Included

  • 1.25" 25mm Plössl eyepiece yields 25x magnification
  • 1.25" 90°-star diagonal places head in comfortable position, especially when OTA is aimed at or near the zenith
  • Smartphone adapter attaches over eyepiece and allows any smartphone to be used for astrophotography
  • Un-magnified red-dot finder allows for fast subject acquisition and easy star-hopping, with variable red illumination to protect night-adjusted vision
Type Achromat
Focal Lenght 640mm
Focal Ratio f/8
Optical Diameter 80mm
Magnification 125x
Lens Coatings Full Coating
Adapter 40mm draw tube focuser; 1.25" 90° Diagonal
Eyepiece 25mm Plössl
Mount type Twilight Nano
Mount Alt-Azimuth