PixInsight Forum

PixInsight => General => Topic started by: CraigNZ on 2016 July 19 19:02:45

Title: How to Add stars
Post by: CraigNZ on 2016 July 19 19:02:45
I am doing an artistic image which needs some stars to an otherwise black background.  I was able to use ImageSolver to register the image and the star mask generated does show lots of other stars.  Question now is how do I use this to map the stars on to the image so that they look as if imaged.  In other words, I would like them to have a FWHM shape of say 3 arcsec and show as faint and bright by boosting their appearance.  I find lots of articles on how to remove stars but not necessarily how to add them back in.
Title: Re: How to Add stars
Post by: Andres.Pozo on 2016 July 20 01:20:41
CatalogStarGenerator
Title: Re: How to Add stars
Post by: CraigNZ on 2016 July 20 01:37:16
Thanks Andres.  I found another method, using StarMask.  This process looks to pull out the faint stars and 'magnify' them.  The number of stars brought out depends on the noise threshold.  Makes for a very nice 'mask'.  I then used PixelMath to add the stars back to the image and the net effect was leaving the extended objects untouched but bringing out the faint background stars.