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Author Topic: How do you change the Mask Opacity to check registration?  (Read 2604 times)

Offline Tom OD

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How do you change the Mask Opacity to check registration?
« on: 2013 January 28 13:57:54 »
Hi All,

I don't know how to change the brightness of the mask with Pixel math. I tried using the formula in the Star Align documentation.
http://pixinsight.com/doc/tools/StarAlignment/StarAlignment.html#usage_011  It near the end of the doc.
I can get the mask overlap in place by applying the formual to the mask. I then put the mask in place and invert it, but it remains solid at 100%. Do you have an example of how to do it properly?


Tom
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Offline georg.viehoever

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Re: How do you change the Mask Opacity to check registration?
« Reply #1 on: 2013 January 29 01:29:32 »
You probably need to uncheck the "Rescale" option in the PixelMath dialog. If you leave it checked, the result is always rescaled to the range [0,1].
Georg
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Georg (6 inch Newton, unmodified Canon EOS40D+80D, unguided EQ5 mount)

Offline Tom OD

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Re: How do you change the Mask Opacity to check registration?
« Reply #2 on: 2013 January 29 04:13:35 »
Yes that worked, thanks again Georg.
Tom
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