field star · mag 2.3
Center field star · mag 2.3 in the finder or a low-power eyepiece before following the field stars.
How to find NGC5139
This guide uses bright stars first, then narrows the field for a telescope or binocular finder.
Follow the route from one recognizable star to the next until you reach NGC5139.
NGC5139 is below the horizon at the selected time. No suitable observing time was found during the next two nights.
Use the overview to locate the first bright reference, then follow the numbered route.
field star · mag 6.3
From field star · mag 2.3, move about 4.5° toward the north-west until you reach field star · mag 6.3.
