// RON_Calculation.txt
//
// FVH (2010-03-18)

getDateAndTime(year,month,dow,day,h,m,s,msec);
t = ""+year+"-"+month+"-"+day+"T"+h+":"+m+":"+s;

// IS THERE A STACK READY?

ns = nSlices();
if (ns <= 1) exit("RON Calculation only works with a stack of bias images!");
title = getTitle();

print("\n-------------------- "+t+" --------------------");
print("RON Calculation:");

// PROCESS

print("     * using "+ns+" bias images from the stack \""+title+"\"");
for (i=1; i <= ns; i++) {
	setSlice(i);
	print("               "+getInfo("slice.label"));
}

print("     * \"RON\" = standard deviation ...");
run("Z Project...","projection=[Standard Deviation]");
rename("RON");

print("     * measuring mean read-out noise ...");
run("Set Measurements..."," mean standard modal min max display redirect=None decimal=4");
run("Measure");

ron = getResult("Mean");
print("       ... RON = "+ron+" counts");

print("     * saving result in CCD preferences ...");
call("ij.Prefs.set","ccd.ron",""+ron);

print("FINISHED!");