-7.99
-7.01 This is what we are looking for
-6.25 or this.
-5.25
-4.25
-3.25
-2.25
-1.25
-0.25
0.00 This is the image of the slit at focus without mask, only central area of the mirror exposed.
0.00 and after putting the mask on we see the interference.
+0.25
+0.75
+1.75
+2.75
+3.75
+4.75
+5.75
+6.29 Again, here is our second target
+6.75
+7.75
+8.75
+9.75
+10.75
+11.75
+12.75
+13.75
+14.75
+15.75
+16.75
+17.75
+18.75
+19.75
+20.75
+21.75