Which 3 mounts is the Celestron Polar Finderscope compatible with?
This polar finderscope is designed specifically for the Celestron Advanced VX (AVX), CGEM, and the discontinued CG-5 German equatorial mounts. It installs directly into the polar axis housing on these models.
How do I use the Celestron Polar Finderscope's reticle in the Northern Hemisphere?
The reticle includes etched patterns for the Big Dipper (for spring/summer) and Cassiopeia (for fall/winter). First, rotate your mount's right ascension axis to match the orientation of the appropriate constellation in the sky with the pattern on the reticle. Then, use the mount's altitude and azimuth adjustment bolts to move the entire mount until Polaris falls into the designated circle on the reticle.
Does the Celestron Polar Finderscope work for observers in Australia or South America?
Yes, it is designed for both hemispheres. The reticle contains an etched pattern of four stars in the constellation Octans for use in the Southern Hemisphere. You simply align your mount so these stars match the positions shown in the eyepiece.
How do I focus the Celestron Polar Finderscope?
Focusing is done by turning the eyepiece. Point the telescope at a distant object during the day or a bright star at night and rotate the eyepiece until the crosshairs of the reticle are perfectly sharp.
For my Advanced VX mount, will this save time compared to Celestron's All-Star Polar Alignment?
Yes, in many cases. The polar finderscope provides a direct, visual method that can be faster than a software-based routine like All-Star, especially if you have a clear view of Polaris. All-Star Polar Alignment is an excellent alternative when the celestial pole is obstructed by trees or buildings, but a polar scope is often the quickest way to a precise initial alignment for an imaging session.
What's the main limitation of using the Celestron Polar Finderscope for my CGEM?
The primary limitation is that it requires a direct line of sight to the North Celestial Pole (near Polaris) or the South Celestial Pole. If your observing location has obstructions blocking your view of the pole, you will not be able to use the finderscope and will need to rely on a software-assisted alignment routine instead.
