### Messier object types:

##

### units

### scale

## x-axis

linear
log

## y-axis

linear
log
×

×
Help

The coloured blocks on the graph show the ranges of size and distance in which certain objects may be found, while the symbols show specific> examples of each type of object. A given type of object may be toggled on or off by clicking on the object type in the legend above the graph. Clicking on a symbol in the graph shows further details for that specific object.

The tools below the graph allow you to change the length units for each axis and to switch between linear or logarithmic axes. You may also zoom in or out using the "+" and "−" buttons. The "hand" button toggles the mouse between a pan function and a select area function. The "home" button resets everything and the “camera” button captures a snapshot of the graph.”