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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
Explore Scientific FirstLight 127mm Doublet Refractor with Twilight I Mount - Discontinued
Explore Scientific FirstLight 127mm Doublet Refractor with Twilight I Mount - Discontinued

Explore Scientific FirstLight 127mm Doublet Refractor with Twilight I Mount - Discontinued

by Explore Scientific
SKU ES-FL-AR1271200MAZ01
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$849.99 - $849.99
$849.99
$849.99 - $849.99
$849.99
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  • 127mm Achromatic Doublet Refractor
  • Twilight I Manual Alt-Azimuth Mount
  • 2.5-inch Hexagonal Focuser
  • 25mm Plössl Eyepiece
  • Red Dot Viewfinder
  • Smartphone Camera Adapter
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Explore Scientific FirstLight 127mm Doublet Refractor with Twilight I Mount

    The Explore Scientific FirstLight 127mm Doublet Refractor pairs a large 127mm air-spaced doublet objective with the simple and stable Twilight I alt-azimuth mount, creating a complete system ready for detailed views of the solar system and brighter deep-sky objects right out of the box.

    The FirstLight 127mm OTA: Resolving Power for the Solar System

    The core of this telescope is its 127mm achromatic refractor objective. This aperture gathers significant light, enabling you to resolve fine details like the Cassini Division in Saturn's rings, Jupiter's cloud bands and Great Red Spot, and countless craters and rilles on the Moon. Its long focal ratio design darkens the sky background and increases contrast, making planets and double stars stand out sharply.

    While all achromatic doublets exhibit some minor false color (chromatic aberration) on the brightest targets, this design controls it well, delivering crisp and pleasing views. The optical tube is equipped with a robust 2.5-inch hexagonal focuser that provides smooth, precise adjustments without image shift, even with heavier accessories attached.

    Twilight I Mount: Intuitive Alt-Azimuth Sky Navigation

    Supporting the optical tube is the Explore Scientific Twilight I mount, a manual alt-azimuth design prized for its simplicity and stability. There's no complex polar alignment procedure; simply point the telescope up, down, left, or right to find your target. This "grab-and-go" setup is ideal for quick, spontaneous observing sessions.

    Smooth slow-motion controls on both axes allow for precise manual tracking of celestial objects as they drift across the sky due to Earth's rotation. The heavy-duty steel tripod provides a solid foundation, damping vibrations quickly for steady views, which is critical when observing at high magnification.

    A Complete, Ready-to-Observe Package

    This FirstLight system arrives with all the essential accessories for your first night out. The package includes a 25mm Plössl eyepiece for wide-field views, a red-dot finder to help you easily locate and center objects, and a 1.25" diagonal for comfortable viewing.

    • Smartphone Adapter: A dedicated adapter is included, allowing you to position your smartphone's camera over the eyepiece. This makes it easy to capture images of the Moon and bright planets to share with friends and family.
    • Complete System: With optics, mount, tripod, eyepiece, and finder included, this telescope is a fully integrated solution for both aspiring observers and seasoned hobbyists seeking a portable, high-power refractor.

  • What can I realistically see with the FirstLight 127mm refractor?

    The 127mm aperture provides enough resolution to see significant detail on solar system objects. You can expect to see Jupiter's main cloud belts and its four Galilean moons, the rings of Saturn, phases of Venus and Mercury, and polar ice caps on Mars when it's near opposition. For deep-sky objects, it will show bright star clusters like the Pleiades (M45), the core of the Orion Nebula (M42), and the Andromeda Galaxy (M31).

    Is the Twilight I mount on the FirstLight 127mm system good for beginners?

    Absolutely. The Twilight I is a manual alt-azimuth mount, which is the most intuitive type to use. You simply move it left, right, up, and down, like a camera tripod. There is no complicated electronic setup or alignment process, making it an excellent choice for beginners who want to start observing immediately.

    Can I do serious astrophotography with the Explore Scientific FirstLight 127mm package?

    This package is designed for visual observing and basic smartphone imaging. The included smartphone adapter lets you take snapshots of the Moon and bright planets. However, the manual alt-azimuth mount does not track the sky with the precision needed for long-exposure deep-sky astrophotography, which requires a motorized equatorial mount.

    How does the FirstLight 127mm refractor handle chromatic aberration on bright stars?

    As an achromatic doublet, the FirstLight 127mm will show some chromatic aberration, which appears as a faint violet halo around the brightest objects like Vega, Sirius, or the limb of the Moon. Due to its long focal ratio design, this effect is minimized and does not typically interfere with observing details on planets or resolving dimmer double stars.

    How well does the FirstLight 127mm and Twilight I mount perform on a target like the Hercules Cluster (M13)?

    On the Hercules Cluster (M13), the 127mm aperture will resolve the cluster from a fuzzy patch into a granular ball of countless tiny stars, especially from a dark sky site. The Twilight I mount's slow-motion controls are very helpful here, allowing you to smoothly track the cluster at higher magnifications and keep it centered for detailed study.

    Is the FirstLight 127mm system portable enough for travel to dark sky sites?

    Yes, the system is quite portable. The optical tube, mount head, and tripod can be disassembled without tools for easy transport in a standard car. Its "grab-and-go" nature makes it an excellent choice for taking to locations with less light pollution to get the most out of its 127mm objective.

  • GTIN 812257018123

    • Smartphone Adapter

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  • Explore Scientific Warranty