Astrophotography toolkit
AeonTools
Create your equipment library, build an active setup, and calculate image scale, field of view, optical ratios, filter clearance and exposure equivalence.
Local library
0 items saved
Current configuration
Active setup
Equipment library
Telescopes
Imaging scale
- Effective focal length
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- Pixel size
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- Image scale
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Guiding scale
- Guide focal length
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- Guide pixel size
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- Guide scale
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- Guide / imaging ratio
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Sensor
- Sensor width
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- Sensor height
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- Sensor diagonal
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- Resolution
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Field of view
- Horizontal FOV
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- Vertical FOV
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- Diagonal FOV
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Optical system
- Native focal length
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- Optical factor
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- Effective focal length
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- Aperture
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- Focal ratio
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Resolving power
- Diffraction limit
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- Rayleigh criterion
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Filter clearance inputs
- Aperture
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- Effective focal length
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- Sensor diagonal
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- Sensor-to-filter distance
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- Filter clear aperture
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Filter clearance result
- Minimum filter clear aperture
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- Margin
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- Status
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Exposure equivalence
Focal ratio exposure calculator
System A
System B
Comparison results
| Metric | System A | System B |
|---|---|---|
| Focal ratio | — | — |
| Useful aperture area | — | — |
| Equivalent aperture | — | — |
| Relative exposure time B / A | — | |