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Limiting Magnitude Charts


The charts are in PDF Format inside a ZIP bundle for ease of download.


They are very easy to use.  Take the chart outside, find the area the chart covers, there are 5 charts:


Chart 1 - Orion

Chart 2 - Corvus

Chart 3 - Scorpius

Chart 4 - Eridanus (Achenar Area)

Chart 5 - Musca and Crux


On the chart, some stars are marked with their magnitudes, from around +3 down to about +7.  Find the faintest star that you can see, and your limiting magnitude is about half way between that value, and the value of the next fainter star that you cant see.  Simple.


The link is below.  Just download, print them and have a go.