... About ATNF overview . ... Australia Telescope Steering Committee . ... Parkes radio telescope . ... A simple but quite useful cursor for three-dimensional position determination is a modification of the familiar two-dimensional cursor. ... The position of the two-dimensional cursor is then projected back into the volume and an estimate is made of the depth down the ray the feature the user sees. ... Hence, the user cannot use stereo to assist in perceiving depth if using the active cursor. ...