LRGB Color ration weight

[Stephane Murphy]

Hi, first, PixInsight Rock!, Love it.

I want to combine my color data (RGB) with PixInsight using LRGB Combine interface but not sure how to convert my G2V weight ration to PixInsight weight unit.

My first attemp was:
G2V RGB Ratio: 0.93:1:0.98

I try to convert to PixInsight weight  unit:
0.93 / 0.98 = 0.94
1 / 0.98       = 1.02
0.98 / 0.98 = 1


I am not sure if this correct, the PixInsight won't allow me to enter number greater that 100.


Any ideas?
Thanks
Stephane

[Jack Harvey]

If you just want to normalize to a factor of 100 so it fits in Pixi, divide all three numbers by 1.02 then X 100

R =   92.1
G = 100
B =   98

Thesee numbers now fit in PixInsight.  That said I and others are not fans of G2V and suggest you may
want to read http://pixinsight.com/forum/viewtopic.php?t=444

[Stephane Murphy]

Thanks for the help. For me using G2V only provide a starting value most of the time I need to color balance individual channel anyway.

The LRGBCombine interface won't allow number greather that 100, how do I fit the above results (R=922)?

Thanks
Stephane

[Jack Harvey]

I made a mistake and did not have the decimal in place.  It is there now and all is under 100.  Good Luck!

[twade]

Stephane,

> I try to convert to PixInsight weight unit:
> 0.93 / 0.98 = 0.94
> 1 / 0.98 = 1.02
> 0.98 / 0.98 = 1

I've "complained" about this limitation in LRGBCombination  for quite some time; nevertheless, the easiest way to ensure all values or 1.0 or less is to find the largest number and divide all three values by that number.  For example, in your list the highest number is 1.02.  When I divide all the values by 1.02, I get the following results:

0.92
1.00
0.98

I hope this helps,

Wade

[Stephane Murphy]

Thanks Wade.