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3.3: Star and DSO maskStar mask:![]() I start to make the Star mask. Right click on the NGC 7000 copy layer and choose "Add a Mask to the layer". Set Selection and then click Add. ![]() The mask has now selected only stars, not all but the brighter ones. I renamed the layer to Star mask. When I tried to get more of the weaker stars the computer got over loaded. The camera has 36 million pixels and that consume the RAM memory. I have 16 GB RAM and 256GB extension memory in the form of a SSD. Once a lot of memory but today on the lower limit. DSO mask:![]() Now we want another mask to the DSO, the nebula. Make a new working copy of the NGC 7000 original file. ![]() Right click on the layer and do the same as with the Star mask, but one difference, set Invert mask. ![]() Now it's the surrounding to the stars that is masked out.
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