Explore Scientific


Explore Scientific FirstLight 127 mm Maksutov-Cassegrain With Twilight I Adjustable Alt-Azimuth Mount

TheExplore Scientific FirstLight 127mm Maksutov-Cassegrain Telescope is ideal for users who want a portable yet powerful observation platform that is able to achieve high magnifications for detailed views of the Moon and planets and has the ability to reach out past our solar system to observe brighter deep-sky objects such as nebulae and galaxies.

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 versus Schmidt-Cassegrains reduces obstructions and increases contrast and sharpness
  • Internal focusing mechanism with 1.25" visual back
  • Manual alt-azimuth single-arm fork mount

Included Accessories

  • 1.25" 25mm Plössl eyepiece yields 76x 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
  • Red-dot finder: Unmagnified for fast subject acquisition with variable red illumination to protect night-adjusted vision
Type Maksutov-Cassegrain
Focal Lenght 1900mm
Focal Ratio f/15
Optical Diameter 127mm
Magnification 250x
Lens Coatings Fully Multi Coated
Adapter Smartphone Adapter
Eyepiece 25mm Plössl
Mount type Twilight I
Mount Alt-Azimuth