The ornamental design for a telescope-handling arm, as shown and described.
FIG. 1 is a right side elevational view of the telescope handling arm showing my design in the unfolded condition in which the handling arm is in the fully extended position and securing a pivotally mounted detector at the distal end and the support rod is in a fully extended position, the left side being a mirror image thereof;
FIG. 2 is a right side elevational view thereof in the unfolded condition with the handling arm in a partially extended position and securing a pivotally mounted detector at the distal end and the support rod is in the fully extended position, the left side being a mirror image thereof;
FIG. 3 is a right side elevational view thereof in the unfolded condition with a latch mechanism disengaged to permit retraction of the handling arm to a second partially extended position and securing a pivotally mounted detector at the distal end and the support rod in a partially extended positioned, the left side being a mirror image thereof;
FIG. 4 is an enlarged fragmentary view of the distal end of the handling arm that is connected to the pivotally mounted detector as shown in FIG. 3; and,
FIG. 5 is a right side elevational view thereof in the folded condition in which the handling arm is in the collapsed position and securing a pivotally mounted detector at the distal end that is in the folded position and the support rod is in the collapsed position, the left side being a mirror image thereof.