Author Topic: How to Add stars  (Read 860 times)

Offline CraigNZ

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How to Add stars
« 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.

Offline Andres.Pozo

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Re: How to Add stars
« Reply #1 on: 2016 July 20 01:20:41 »
CatalogStarGenerator

Offline CraigNZ

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Re: How to Add stars
« Reply #2 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.