Step 1: Open the software, create a new layer with black background color, select the layer, and click [Filter]-[Noise]-[Add Noise] in the menu bar.
Step 2: In the pop-up add noise dialog box, select Gaussian distribution, monochrome and quantity, which can be adjusted by yourself, and then click OK.
Step 3: Find [Image]-[Adjustment]-[Color Scale] in the menu bar and click to enter, or press ctrl+L directly.
Step 4: In the pop-up color scale dialog box, adjust the three color scale values in the input color scale, with the left indicating dark tone, moving to the right to increase black value, the right indicating bright tone, moving to the left to increase bright color value, and the middle indicating middle tone.
Step five, after the above steps, a star map can be completed.