Author Topic: Best way to use star mask  (Read 522 times)

Offline e_ri_k

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Best way to use star mask
« on: 2017 October 23 01:47:51 »
Hey guys, long story short Im ruining the stars in my current image. Usually I process my images very basically i.e: Crop, DBE, Colour Calibration, Stretch, Local Histogram Eq..., Curves and then clean up the background, and it leaves a good result.

This time I have a rather faint target, so I have had to stretch it quite a lot, hence why the stars look terrible!

I have started again and created and applied a star mask before stretching it, then slowly adjusting the histogram before I see artefacts caused by the mask. Is this an OK way or is there a better way to protect the stars? I feel like I need to stretch/saturate the stars and galaxy separately to keep it looking good.


Offline jkmorse

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Re: Best way to use star mask
« Reply #1 on: 2017 November 02 17:37:59 »

Books could be written on masking in PI.  If it helps, I have an 80 page workbook that has a large section on masks.  Also, if you haven't looked at it yet, Warran Keller's Inside PixInsight from Springer Press is a great resource.  Also, take a look at Harry's Astrobarn which is a great source for people new to PI.  If you are interested in my workbook, just drop me a line at and I will send it along.



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