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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 Finder Scope Illuminator Only - Discontinued

Explore Scientific Finder Scope Illuminator Only - Discontinued

by Explore Scientific
SKU ES-FNDRILLUM
Sold out
$59.99 - $59.99
$59.99
$59.99 - $59.99
$59.99
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  • Direct replacement for Explore Scientific 50mm finder scopes
  • Variable brightness control for deep red LED illumination
  • Preserves night vision while aiming
  • Length: 41.1mm
  • Diameter: 17.5mm
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Explore Scientific Finder Scope Illuminator Only

    This Explore Scientific Finder Scope Illuminator is the official factory replacement, measuring 41.1mm in length to ensure a perfect fit. Its 17.5mm diameter barrel is engineered specifically for Explore Scientific's 50mm reticle finderscopes, providing crucial variable-brightness deep red illumination for your crosshairs without compromising your dark adaptation.

    Variable Red Illumination in a 41.1mm Body

    The primary function of this 41.1mm illuminator is to make your finder's crosshairs visible against a dark sky. The deep red LED preserves your night vision, while the variable brightness control allows you to dial the intensity down for faint deep-sky targets or increase it for aligning on bright stars. This control is critical for preventing the reticle from washing out faint galaxies or nebulae.

    A 17.5mm Direct-Fit Replacement

    With a precisely machined 17.5mm diameter, this unit is designed to thread directly into compatible Explore Scientific 50mm finder scopes without modification. As a dedicated spare part, it's an essential item to have on hand to prevent a lost or failed illuminator from ending an observing session prematurely. Note that this is the illuminator only; batteries are required for operation but are not included.

  • What batteries does the Explore Scientific Illuminator use?

    The Explore Scientific Finder Scope Illuminator requires two (2) LR41 batteries for operation. Please note that batteries are not included with this replacement part and must be purchased separately.

    Is this illuminator compatible with my Explore Scientific 8x50 Right-Angle Finder?

    Yes, this illuminator is designed as a direct replacement for the one included with Explore Scientific's 50mm finder scopes, including straight-through and right-angle models. Its 17.5mm diameter barrel and threading are made to factory specifications for a perfect fit.

    Why is the light red on the Explore Scientific Finder Scope Illuminator?

    The human eye's rod cells, which are responsible for night vision, are less sensitive to red light. Using a deep red LED to illuminate the crosshairs allows you to see the reticle clearly while minimizing the impact on your dark adaptation, keeping your eyes sensitive to faint celestial objects.

    How does variable brightness help when observing faint objects like the Andromeda Galaxy (M31)?

    When aiming at a large, faint object like the Andromeda Galaxy (M31), a bright reticle can overwhelm the target, making it hard to see. The variable control lets you dim the crosshairs to the bare minimum visibility, so they appear as a faint guide without washing out the galaxy's subtle dust lanes and extended halo.

    Is this an upgrade or a direct replacement part?

    This is a direct, like-for-like replacement for the original illuminator that came with your Explore Scientific finder scope. It offers the same variable red illumination and is not considered an upgrade. It is intended to replace a lost or non-functional unit.

    How do I install the Explore Scientific Illuminator?

    Installation is straightforward. Simply unscrew the old or broken illuminator from the port on your finder scope body and thread the new one in its place. Be sure to install two LR41 batteries (not included) before attaching it to the finder.

  • Length 41.1mm
    Diameter 17.5mm
  • Explore Scientific Warranty