Standard configurations of the ATCAThe following table gives a list of the standard configurations. Three configurations (NS214, EW214, and 122C) are not routinely scheduled: observers must specifically request them to be scheduled.
The station names give the distance west or north of two reference points in increments of 15.306 m. See the station locations page for more information.
Note that for the east-west array configurations, the letter denotes a different configuation. Once the north spur was added and "hybrid" arrays scheduled, it became possible to put the antennas on a given set of station posts in a different order. The letter in a hybrid configuration refers to the ordering of antennas, rather than indicating a completely different configuration.
Click on the array name to get the matrix of spacings corresponding to a particular baseline.
Config Stations ------------------------------------- 6A W4 W45 W102 W173 W195 W392 6B W2 W64 W147 W182 W196 W392 6C W0 W10 W113 W140 W182 W392 6D W8 W32 W84 W168 W173 W392 1.5A W100 W110 W147 W168 W196 W392 1.5B W111 W113 W163 W182 W195 W392 1.5C W98 W128 W173 W190 W195 W392 1.5D W102 W109 W140 W182 W196 W392 750A W147 W163 W172 W190 W195 W392 750B W98 W109 W113 W140 W148 W392 750C W64 W84 W100 W110 W113 W392 750D W100 W102 W128 W140 W147 W392 EW367 W104 W110 W113 W124 W128 W392 EW352 W102 W104 W109 W112 W125 W392 H214 W98 W104 W113 N5 N14 W392 (also H214B, H214C, H214D) H168 W100 W104 W111 N7 N11 W392 (also H168B, H168C, H168D) H75 W104 W106 W109 N2 N5 W392 (also H75B, H75C) EW214 W98 W102 W104 W109 W112 W392 (not routinely scheduled) NS214 W106 N2 N7 N11 N14 W392 (not routinely scheduled) 122C W98 W100 W102 W104 W106 W392 (not routinely scheduled)
Obsolete configurations and old namesThe following four arrays have been made obsolete by other configurations. They are unlikely to be scheduled again.
Config Stations ------------------------------------- 375 W2 W10 W14 W16 W32 W392 210 W98 W100 W102 W109 W112 W392 122B W8 W10 W12 W14 W16 W392 122A W0 W2 W4 W6 W8 W392Note that some older literature may mention array configurations 3A, 3B, 3C and 3D. These are identical to 6A, 6B, 6C and 6D.
Also note that prior to July, 1996, the 122B configuration was refered to as 120 and the 122A configuration was known as 122. These configurations have been renamed to avoid confusion.
Original: Derek McKay (18-Jan-1996)
Modified: Bob Sault (08-Sep-2005), Phil Edwards (10-jul-2009)