Explore Scientific 50mm Finder Scope Rings - Tall

Initial alignment is best done during the daytime. Point your SCT with a low-power eyepiece at a distant, stationary terrestrial object like a telephone pole. Center the object in the eyepiece, then adjust the finder's thumbscrews until the crosshairs are centered on the exact same point. Repeat the process with a high-power eyepiece for maximum accuracy. This daytime alignment will get you extremely close, requiring only minor tweaks on a bright star at night.

A Dobsonian mount often requires you to be at an awkward angle when looking through a low-mounted finder, especially for objects high in the sky like M57 in the summer. The tall profile of these rings elevates the finderscope, allowing you to aim your telescope comfortably while standing or sitting, making the process of star-hopping to your target faster and more enjoyable.

The tall version is ideal for larger telescopes or setups with piggybacked equipment. The extra height creates clearance and, more importantly, provides a much more comfortable viewing position that reduces physical strain, allowing you to focus on observing rather than contorting your body to see through the finder.

No, the finderscope base is sold separately. These rings include the bracket with an integrated dovetail, which is designed to fit into a standard finderscope base mounted on your telescope.

After the initial, precise alignment, you should only need to make very minor adjustments each time you re-attach the finder and bracket to your telescope. The quick-release mechanism is designed to hold alignment reasonably well between sessions.

Yes. The rings feature large, heavy-duty plastic thumbscrews that are specifically designed for easy adjustment, even when you are wearing gloves during cold-night observing sessions.