Eyepiece Collection Calculator
Plan a 3-eyepiece set for your telescope with low, medium, and high power focal lengths.
Inputs
Results
Low Power Eyepiece
40 mm
Medium Power Eyepiece
15.5 mm
High Power Eyepiece
6 mm
True FOV (low power)2°
How to Use This Calculator
- Enter Scope Focal Length (mm), Scope f/ratio, and Min Usable Magnification.
- Set Max Usable Magnification.
- Review Low Power Eyepiece (mm), Medium Power Eyepiece (mm), and High Power Eyepiece (mm).
- Use True FOV (low power) (°) to inform your decision.
- Use the chart to visualize the results and explore different scenarios by adjusting inputs.
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