For a detailed Finder Chart and rotation setting see Kyle Kaplan's software. For rough rotations use the lookup table below.

193 = 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) = 193 - 90 + (Position Angle) = 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
0,180	103
15,195	118
30,210	133
45,225	148
60,240	163
75,255	178
90,270 (default)	193 (default)
105,285	208
120,300	223
135,315	238
150,330	253
165,345	268
180,360	283

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