| Calculations for Mirror Specifications | |
| Property | Formula / Description |
|
Diameter ( D ) Clear Aperture Radius of Curvature ( R ) Radius of Mirror ( r ) Focal Length ( f ) Focal Ratio ( F or N ) Light Gathering Power ( LG ) Stellar Magnitude Resolving Power Diffraction Limited Resolution Useful Magnification M Minimum Magnification |
Diameter of Mirror D - ( Diameter of Secondary Mirror ) 2 * f D / 2 R / 2 f / D ( r * D ) 2.7 + ( 5 * log D ) note: D must be in mm & ( M >= D ) 120 / D note: D must be in mm 2 / ( 2440 * 550e-9 * F ) lines / mm 2 * D note: D must be in mm 0.2 * D note: D must be in mm |
