Set star parameters window

Use this window to control how different magnitude stars are to appear. Magnitude (a.k.a. apparent magnitude) refers to how bright a star appears. This is an inverse relationship: the lower the magnitude, the brighter the star. Very bright stars have magnitudes less than zero. Dim stars, up to about magnitude 6, can be seen by most people in dark skies. Each whole number represents a change in brightness by a factor of 2.512, which is the 5th root of 100. Thus 5 whole numbers represents a change in brightness by 100 times.

The two "Limiting magnitude" sliders control how many stars are shown by setting the minimum magnitude when completely zoomed-out and zoomed-in. By offsetting these two sliders (i.e. keeping the lower one to the right of the upper one), more stars will begin to appear while zooming in.

The bottom two sliders control what size dot is used to represent the brightest and dimmest stars. The "Dimmest" slider refers to stars having a magnitude calculated from the top two sliders and the zoom level.

Pressing "OK" or "Apply" accepts new values.
Pressing "Cancel" rejects any changes.