Table I.
Pinhole plates built for M3R. The table includes magnification, number of pinholes, pinhole diameter, opening angle, pinhole pattern, sensitivity, (normalized to the most sensitive aperture), and material where Ku stands for Kulite and W-Cu stands for tungsten-copper. The apertures have been numbered for reference later in the manuscript.
| Aperture no. | Magnification | No. | Diameter (mm) | Sensitivity | Angle (deg) | Material |
|---|---|---|---|---|---|---|
| 1 | 1.60 | 5 | 1 | 0.65 | 85.4 | Ku |
| 2 | 3.33 | 1 | 1 | 0.34 | 85.4 | Ku |
| 3 | 1.60 | 1 | 1 | 0.10 | 85.4 | Ku |
| 4 | 3.33 | 4 | 1 | 1.00 | 85.4 | Ku |
| 5 | 2.47 | 9 | 0.25 | 0.05 | 60.0 | W-Cu |
| 6 | 3.33 | 1 | 0.5 | 0.20 | 75.0 | W-Cu |
| 7 | 2.47 | 4 | 0.5 | 0.52 | ~70.0 | W-Cu |