For a detailed Finder Chart and rotation setting see Kyle Kaplan's software. For rough rotations use the lookup table below.
133 = Default Encoder Setting at 90 deg. PA (slit east to west)
Position Angle (Start north and go east, N=0, E=90, S=180, W=270 degrees, Default = 90 deg slit oriented east-west)
(Encoder Setting) = 133 - 90 + (Position Angle) = 43 + (Position Angle)
WARNING: We recommend you do not rotate the instrument more than +/- 90 degrees from the nominal 90 degree position to avoid entangling wires and hoses. The encoder setting limits are:
| Positon Angle | Encoder Setting |
|---|---|
| 0,180 | 43 |
| 15,195 | 58 |
| 30,210 | 73 |
| 45,225 | 88 |
| 60,240 | 103 |
| 75,255 | 118 |
| 90,270 (default) | 133 (default) |
| 105,285 | 148 |
| 120,300 | 163 |
135,315 | 178 |
| 150,330 | 193 |
| 165,345 | 208 |
| 180,360 | 223 |