Star Test Patterns
Star Test Patterns
Radiation from different areas of the focal spot will cause a periodic blurring of the pattern due to penumbra effects.
Knowledge of the geometric factors and the distance from the center of the pattern to the region where blurring occurs will permit the calculation of the focal spot size.
Technical specifications
- Type 9-0.25-07: 4 Sectors / 7° each
- Type 9-0.25-360: Full Star 360°
- Type 9-0.5-14: 4 Sectors / 14° each
- Type 9-0.5-360: Full Star 360°
- Type 9-1.0-28: 4 Sectors / 28° each
- Type 9-1.0-360: Full Star 360°
- Type 9-1.5-36: 4 Sectors / 36° each
- Type 9-1.5-360: Full Star 360°
- Type 9-2.0-44: 4 Sectors / 44° each
- Type 9-2.0-360: Full Star 360°
