Coude diagnostics

• move X motor
• move Y motor
• move both X and Y motors to a position
• go to specific longitude, latitude
• read current mirror positions
• read image rotator position (currently commented out)
• read current light level
• calculate and print solar coords
• do a sun center
• display solar and encoder values
• manually enter bitbus cmd (currently commented out)
• convert lat, long values to x, y
• convert encoder values to helio. coord
• change Coude speed
• Stop a coude motor!
• reset and zero the encoders