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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.
Celestron CG-4 Polar Axis Finder

Celestron CG-4 Polar Axis Finder

by Celestron
SKU CEL-94223
$71.95 - $71.95
$71.95
$71.95 - $71.95
$71.95
Price Match Policy!
  • Designed for Celestron CG-4 and Omni equatorial mounts
  • Simplifies polar alignment for improved tracking accuracy
  • Etched reticle with recognizable Northern Hemisphere star patterns
  • Includes star patterns for Southern Hemisphere alignment
  • Installs directly into the mount's rear polar finder port
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Celestron CG-4 Polar Axis Finder

    Achieve precise polar alignment for your Celestron CG-4 or Omni series equatorial mount with the Celestron CG-4 Polar Axis Finder. This essential accessory installs directly into the dedicated port on your mount, providing a clear, etched reticle with familiar star patterns to make your setup faster and more accurate. Proper polar alignment is critical for long-exposure astrophotography and eliminates star trailing, and this finder is the most straightforward way to get it right.

    Fast, Accurate Polar Alignment for CG-4 & Omni Mounts

    Designed specifically for Celestron's popular CG-4 and Omni equatorial mounts, this polar finder simplifies what can be a frustrating process. Instead of relying on rough estimates or compass alignments, you can look through the finder to see the sky around the celestial pole. The focused reticle provides the exact reference points you need to position your mount with precision, ensuring your telescope tracks celestial objects smoothly across the sky.

    A Reticle for Both Hemispheres: Align with Polaris or Octans

    The finder's reticle is intelligently designed for observers worldwide. For the Northern Hemisphere, it features graphical representations of the Big Dipper and Cassiopeia to help you orient the mount based on the season. It also clearly marks the position of Polaris relative to the North Celestial Pole (NCP), allowing you to use your mount's altitude and azimuth controls to place the star in the designated spot for a near-perfect alignment.

    If you're observing from below the equator, the Celestron Polar Axis Finder remains just as useful. The reticle includes an etched pattern of four key stars in the constellation Octans, providing a reliable guide for aligning on the South Celestial Pole.

    Celestron CG-4 Polar Axis Finder vs. Manual Alignment

    While you can get a rough alignment without a finder, the difference in tracking is immediate. For visual observation, a polar finder makes it easier to keep planets centered in the eyepiece at high magnification. For astrophotography, it's non-negotiable; even with an autoguider, a poor initial alignment will introduce field rotation that ruins long exposures. This finder removes the guesswork, saving you valuable time under clear skies.

  • How do I install the CG-4 Polar Axis Finder?

    Installation is straightforward. The finder is designed to thread into the polar finder port located at the rear of your Celestron CG-4 or Omni mount. Simply remove the port's protective cap and screw the finder in until it is secure. You can then focus the finder's eyepiece until the reticle appears sharp.

    Do I need tools to use the Celestron Polar Axis Finder?

    No tools are required for installation or use. The finder threads in by hand, and all adjustments for alignment are made using your mount's built-in altitude and azimuth adjustment knobs.

    Why are both the Big Dipper and Cassiopeia on the reticle for the CG-4 Finder?

    These two constellations are circumpolar (they never set below the horizon) but are on opposite sides of the North Celestial Pole. Depending on the time of year, one may be high in the sky and easy to see, while the other is near the horizon and obscured. The reticle includes both so you always have a clear reference for orienting the finder correctly—the Big Dipper is best in spring and summer, while Cassiopeia is ideal for fall and winter.

    Is this finder illuminated?

    This model is a non-illuminated polar axis finder. To see the reticle against a dark night sky, many astronomers use a dim red flashlight shone briefly into the front of the finder to make the etchings visible while they make adjustments.

    Can I use the CG-4 Polar Axis Finder for imaging planets like Jupiter and Saturn?

    Absolutely. A precise polar alignment is crucial for planetary imaging. It ensures your mount tracks accurately, keeping the planet centered on your small camera sensor for longer periods. This allows you to capture more frames for stacking and results in sharper, more detailed final images of objects like Jupiter's cloud bands or Saturn's rings.

    Will this finder fit other mounts besides the Celestron CG-4 and Omni?

    This polar axis finder is specifically designed for the port dimensions and threading of the Celestron CG-4 and Omni series mounts. It is not compatible with other mounts, such as the Advanced VX or CGEM series, which have their own dedicated polar finders.

  • Compatibility Celestron CG-4 and Omni Series Equatorial Mounts
    Hemisphere Support Northern and Southern
    Northern Reticle Patterns Big Dipper, Cassiopeia, Polaris, NCP
    Southern Reticle Patterns Octans asterism

    • Celestron CG-4 Polar Axis Finder

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  • Celestron 2-Year Warranty