Enabling Tracking

The most basic telescope commands are POINT and HALT. The POINT command directs the telescope to begin tracking the source that the observer has requested. HALT will cause the telescope to stop tracking and remain at a fixed position. The POINT/HALT status is shown at the top of SCREEN 1. There are several additional commands which move the telescope to the standby (DROP) and servicing (SERVICE) positions. These commands are summarized in Table 3.1

truein

Table 3.1

Antenna Control Keywords

DROP

Drop the telescope to elevation 1$^\circ$.5 (MAIN and REF coordinates are not affected.

HALT

Stop moving the telescope.

POINT

Move telescope to previously commanded position.

RAISE

Return telescope to position that preceded DROP.

SERVICE

Move telescope to service position (AZ=135$^\circ$, EL=1$^\circ$).5.

STOW

Move telescope to stow position (AZ=135$^\circ$, EL=4$^\circ$).

truein