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Bintel FOV Calculator

Our customers have missed the Bintel Calculator, and we’ve listened! We’ve decided to build a new and improved version from the ground up to make your astronomy life easier. Enjoy instant reloading with no more page refreshes and access real-time survey data for color images across all Messier and NGC targets.

We’re committed to regularly updating and improving the calculator, ensuring it gets even better over time, so if you've encountered any bugs, or have thought of anything that can be added, let us know through the feedback box at the bottom of the page.

To get the Latest updates on what has changed please join our discord - Link

Bintel Eyepiece & Camera FOV Calculator

Bintel Eyepiece & Camera FOV Calculator

My setups
Image settings
Beginner Advanced
Start typing: model, aperture or focal length
e.g. “Plössl 25mm 50°”, “Nagler 13mm 82°”
Beginner Advanced
Used to set scope focal length for imaging
Start typing: model (e.g. ASI2600MM, QHY268C)
Mosaic Planner
Off On
Enables mosaic planning, overlay and export
Sky cutout
No image yet. Try The Moon.

Visual results

Magnification
Exit pupil (mm)
True FOV (°)
Effective focal length (mm)
Effective f/-ratio
Max useful magnification
Resolving limit (Dawes)
Resolving limit (Rayleigh)