To do this, I need to have pictues of the Airy Disk images I am attaching (I can email the original file) that have a transparent background.
The idea is to use some blown up images of planets and show how the Airy Disks from the smaller apeture spreads the energy from any geometric point on the extended target to a further distance than with a larger aperure.
To do that, I want to use Airy Disks images with a transparent background rathar than a black background so that the Airy Disk and the rings can be super-imposed over the background image.
Does anyone have a program that can convert these Airy Disk images so that any area in each frame that is black will be converted to being transparent?
Thanks in advance...
Agian, if you need the original image, just PM me your email address and I can send it to you, and then you will have my address to return it.