With this eyepiece calculator tool you can easily evaluate how a certain telescope-eyepiece combination will work and how large the field of view (FOV) will be compared to known objects.
How to use the Eyepiece calculator
- Input your telescopes aperture and focal length and any extra reducer/barlow if used.
- Select an eyepiece from the list or input the eyepiece data (focal length and appearant field of view ) via the sliders.
Based on this you will se a graphic illustration of the field of view.
In the summary list you will get all the data needed to review the telescope-eyepiece combination.
If you want a certain eyepiece added to the list please contact us.