Location Function Creator The astro-viewer is a Precursor artifact in Jak 3. It is an ancient structure located in Southern Haven Forest, and is activated by five smaller artifacts, including the holo cube, the beam generator, the Prism, the quantum reflector, and the time map. The astro-viewer appears to function as a very powerful telescope, allowing Jak to see far into space. For unknown reasons, when the time map is added, Jak is able to link into the Dark Maker ship systems and control some of the machines.