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Are you a Vixen telescope user? Want more filter choices? STC has designed a range of step-up rings and astro-adapters to expand your filter options across multiple thread sizes — from 37mm to 95mm.
Whether you're attaching a larger filter to a smaller lens thread or adapting your telescope eyepiece for astrophotography, STC's step-up rings provide a secure, precision-machined connection without damaging your equipment.
Features
How to Choose the Right Size
The first number is your lens or telescope's filter thread diameter (inner); the second number is the filter or accessory diameter you want to attach (outer). For example, a 52-67mm ring lets you use 67mm filters on a 52mm thread lens.
Frequently Asked Questions
What are step-up rings used for?
Step-up rings allow you to attach a larger-diameter filter or accessory to a lens or telescope eyepiece with a smaller filter thread. For example, a 48-56mm step-up ring lets you use 56mm filters on a 48mm thread.
Which size step-up ring do I need?
Choose the size that matches your lens or telescope's filter thread (inner diameter) and the filter or accessory you want to attach (outer diameter). For example, if your lens has a 52mm filter thread and you want to use a 67mm filter, select the 52-67mm option.
Are these step-up rings compatible with Vixen telescopes?
Yes. STC originally designed the 48-56mm Astro-Adapter specifically for Vixen telescope users who want to expand their filter options. Other sizes are also available for different telescope and lens configurations.
Are these rings compatible with STC clip filters?
These step-up rings and astro-adapters are designed to work with STC's filter ecosystem, including astrophotography filters. Please verify the thread size of your specific lens or telescope before purchasing.
What material are the rings made from?
STC step-up rings are precision-machined metal components designed for secure, reliable attachment without damaging your lens or telescope threads.
Type: Accessories
