Time to move the 2012 earthnight out of "Texture Tools" I am not using the TX tools so.....
using the 2006 Cal. ( f16) as a burn mask
and after adding the 2000 "gas flares" and "fire"
and setting NY NY to about 160 ( 140 to 190 over downtown)
--- the 2006 cal had NYNY at a 76 px value ---
i get this
and Celestia screen shots
I have a bit of a habit of just scrapping things and starting over
-- and this is a start over
removed the "earth map" from the background of the 2012 EO EarthNight from each of the RED,GREEN,BLUE layers
( the EO 2012 is normalized so
so subtract the value of the ice RED 15, GREEN 31, BLUE 82 and renormalize each layer
This moved the image into the 32 bit FLOAT
so doing a convert to UCHAR put the ( now negative earth map to ZERO)
burned each layer using a slightly blurred 2006 Cal.
Multiply one image by the other and divide by the max px value on the mask , this also moved the image back into FLOAT
Then adjusted exposure and gama to "0.4" ( for looks )
then back to 0 to 255 normalized UCHAR as the orig. image was .
Combined the three red,green,blue layers into a single image
the location of the MAX px value is still the same in this rework of the 2012 as was in the 2006 cal.
there are some artifacts that need removing
lights not in the 2006 cal map are a bit BRIGHT
--the cat is being a pest and is walking on the keybord
-- back later