Will the Explore Scientific 50mm rings fit a finder scope from another brand?
Possibly. Explore Scientific makes these rings for 50mm finder scopes (50mm is the finder aperture, not the tube diameter). Each ring has three adjustment points that allow some variation in tube size, so check your finder's tube diameter before buying.
What kind of base do I need for these Explore Scientific finder rings?
These rings use a standard dovetail foot and require a compatible finder scope base, which is sold separately. The bracket dovetails into the finder base and locks down with thumbscrews.
How does the 93mm height help when using my 10" Dobsonian?
On a larger telescope like a 10" Dobsonian, the 93mm height of these Standard rings raises the finder scope away from the main tube. This makes it easier and more comfortable to look through the finder without having to crane your neck at an awkward angle, especially when the telescope is pointed high in the sky.
What is the benefit of the three-point adjustment on the Explore Scientific 50mm rings?
A three-point adjustment system allows for very precise and stable alignment (collimation) between your finder scope and main telescope. By adjusting the three opposing screws, you can aim the finder with high accuracy and ensure it remains locked on target, unlike simpler spring-loaded designs.
Can I leave these rings on my Schmidt-Cassegrain telescope when I put it in its case?
Probably not. Most form-fitting telescope cases require the finder scope to be removed. The quick-release dovetail on the Explore Scientific rings is specifically designed for this, allowing you to detach the entire finder and bracket assembly easily for storage and reattach it quickly at your next session.
What are the adjustment screws on the Explore Scientific 50mm rings made of?
The adjustment screws are made from a heavy-duty plastic with large, textured heads. This material prevents marring the finish on your finder scope's tube and makes them easy to turn with bare hands or gloves.
