process to make slightly different subs the same density?

[jamesRC]

Hi ppl,

In one of my mosaic making efforts, I got a finished mosaic in which the individual panels apparently had slightly different brightness. I would like to correct the individual panes to be the same brightness for smooth merging in the mosaic. How can I do this? This would be useful in other ways too. I think maybe there is a process to do that but i can't remember the name. Or I imagined it.

Can anybody help out with this?  Thanks!

James

[John_Gill]

Hi,

When doing the StarAlignment select "Frame Adaption" or perhaps use LinearFit on the individual images before doing SA.

space is not black
John

[pfile]

you cant use linearfit because linearfit can only be used on images which are registered to one another... but there is a script out there called DNALinearFit (DNA = David N Ault) that first computes the intersection between two mosaic panes, then computes the linear fit and applies it to the target image.

to a certain extent the GradientsMergeMosaic process also normalizes the frames a little bit but only in the vicinity of the seam.

rob

[dave_galera]

DNALinearFit does the job and works very well

[jamesRC]

Thanks for replying, guys. I'll check these things out.

James