Explore Scientific


Explore Scientific FirstLight 100 mm Maksutov-Cassegrain on the Twilight Nano Altitude-Azimuth Mount

The Explore Scientific FirstLight 100 mm Maksutov-Cassegrain Telescope is the perfect tool for observing the night sky. Whether you’re looking to delve into the details of our solar system or explore deep sky treasures, the versatile FirstLight series is an observing package that will fit your individual needs.

Its Maksutov-Cassegrain optical configuration is engineered with a convex meniscus lens that not only eliminates the need for periodic collimation but by the nature of the lens requires a smaller secondary mirror that limits obstruction and increases contrast.

The Maksutov optical path results in a slower focal ratio and a narrower field of view versus a similar Schmidt design. The optical benefits make this a useful scope for planetary and double-star observation.


  • Compact Maksutov-Cassegrain optical configuration
  • Front convex meniscus lens corrects spherical and chromatic aberrations and comas (off-axis aberrations) across the entire field of view
  • Smaller secondary mirror reduces obstructions and increases contrast and sharpness
  • Manual alt-azimuth single-arm fork mount

Accessories Included

  • 1.25" 25mm Plössl eyepiece yields 56x magnification
  • 1.25" 90° star diagonal places head in comfortable position, especially when optical tube assembly is aimed at or near the zenith
  • Smartphone adapter attaches over eyepiece and allows any smartphone to be used for astrophotography
  • Red-dot finder: Unmagnified for fast subject acquisition with variable red illumination to protect night-adjusted vision
Type Maksutov-Cassegrain
Focal Lenght 1400mm
Optical Tube 32cm
Focal Ratio f/14
Optical Diameter 100mm
Optical Tube Weight 4lbs
Magnification 200
Adapter Smartphone Camera adapter
Eyepiece 25mm Plössl
Mount type Twilight Nano
Mount Alt-Azimuth