Mount Commands

• rsync [-w]                         - move mount to sync position

  The rsync command moves the mount to the home position and resets the encoder position. This command must be run before the telescope can point at the sky.

• rstand [-w]                        - move mount to standby position

  The rstand command moves the mount to standby position as defined in the schierd.conf file. This is usually set to the zenith position.

• rpark [-w]                         - move mount to park position

  The rpark command moves the mount to the park/stow position as defined in the schierd.conf file. This is usually set just below the horizon to the north or south, depending on the location of the telescope.

• rmove [-w] [-c] [-n] -r ra -d dec [-j epoch] [-s slew_spd (1-100)]
• rmove [ ] -h ha -d dec             - move mount to specified location

  The rmove command moves the mount to the specified target, and starts the mount tracking at sidereal rate. The user can specify either right ascension and declination or hour angle and declination. The epoch defaults to J2000.0. The RA/HA units are decimal hours or [hour minutes seconds], delimited by spaces. The Dec units are decimal degrees or ${^{\circ}/'/''}$, also delimited by spaces.

  The check option (-c) has rush check the validity of the coordinates before sending them to the mount. If the operator is not careful, they might find the mount pointed below the horizon! However, there are software and hardware limits to ensure the mount will not try to point outside the encoder range.

  The slew speed option (-s) describes the percentage of the maximum speed at which to slew. Default is 25%.

  Under normal operations, the mount will calculate the best focus from the temperature and elevation. During testing and calibration, the operator might wish to override the auto focus with the -n ``no autofocus'' option. The focus can be set manually using the focus move commands in Section 2.5.8.

• rshift [-w] [-r delta_ra] [-d delta_dec] [-t]  -shift the mount axes

  The rshift command moves the mount a specified amount on the RA and Dec axes. This command is for use before a pointing model has been constructed. The values delta_ra and delta_dec refer directly to the RA and Dec axes of the mount, and not to the celestial sphere. The units of delta_ra and delta_dec are both degrees.

  The tracking (-t) option starts tracking the mount at sidereal rate on the RA axis only. When the mount is reasonably close to polar alignment this works fine for short exposures, but streaking appears at long exposures. For long exposures a pointing model is necessary.