Free Astronomy Tools
If you have a suggestion for a tool, please submit a contact form and we will do our best to get it added.
Eyepiece Calculator:
Get the Best Views from Your Telescope
Our maximum magnification calculator and personalized telescope eyepiece recommendation tool will help you:
- Discover your telescope’s maximum magnification
- Learn the optimal way to use a Barlow lens for maximum value
- Generate personalised eyepiece recommendations for your scope
- Unlock product recommendations (coming soon)
Simply put in the focal length and aperture of the telescope to get your recommendations.
More Tools Coming Soon!
We’re constantly looking to improve, but tools can take a while to create and test. Please bear with us.
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