For a detailed Finder Chart and rotation setting see Kyle Kaplan's software. For rough rotations use the lookup table below.
363 193 = Default Encoder Setting at 90 deg. PA (slit east to west) (NOTE: Default encoder setting was 393, but changed to 363 after installation of rotator)
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) = 363 193 - 90 + (Position Angle) = 273 103 + (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 | |
|---|---|---|
| 285 | 198 | |
| 300 | 213 | |
| 315 | 228 | |
| 330 | 243 | |
| 345 | 258 | |
| 360, 0 | 273 | |
| 15 | 288 | |
| 30 | 303 | |
| 45 | 318 | |
| 60 | 333 | |
| 75 | 348 | |
| 90 (default) | 3630,180 | 103 |
| 15,195 | 118 | |
| 30,210 | 133 | |
| 45,225 | 148 | |
| 60,240 | 163 | |
| 75,255 | 178 | |
| 90,270 (default) | 193 (default) | |
| 105,285 | 378208 | |
| 120,300 | 393223 | |
135,315 | 408238 | |
| 150,330 | 423253 | |
| 165,345 | 438268 | |
| 180 | 453 | |
| 195 | 468 | |
| 210 | 483 | |
| 225 | 498 | |
| 240 | 513 | |
| 255 | 528 | |
270 | 543,360 | 283 |