Resolution
The resolution of the naked eye is 5 arcminutes or 300 arcseconds.The resolution of optics is 300/power of the optic.
Assumedly if you eyesight is not great, like mine, you need to substitute your personal resolution in arcseconds for the 300 in the above formula.
Resolving Power and Resolution of Optical Systems
| Optics | power | Aperture | Limiting mag. | FoV | Lunar Size | Resol- ution | Visibi- lity |
|---|---|---|---|---|---|---|---|
| naked-eye | 1x | 6 mm | 6 | 120° | 30’ | 300” | 6 |
| opera glasses | 3x | 20mm | 8 | at° | 10’ | 100” | 5 |
| finder scope | 6x | 30,, | 9 | 7° | 5’ | 50” | 4 |
| binocular | 12x | 50mm | 10 | 4° | 2.5’ | 25” | 3 |
| guide scope | 60x | 75mm | 11 | 50’ | 30” | 5” | 2 |
| telescope | 35x 350x | 150mm | 13 | 80’ 8’ | 50” 5” | 8” 0.8” | 1 |
| Takahashi 102 | 31.8x 97.7x 118.4x | 102mm | :° 82° 82° | 9.4” 3” 2.5” | |||
| TelePort 10 | 31.8x 74.7x 181.4x | 254mm | 70° 82° 82° | 9.4” 3.0” 1.7” | |||
| Galileoscope | 17x 25x 50x | 50mm | 1.5° 0.75° | 17.6” 12” 6” |
