Thanks Dennis, there has to be one of those elements there somewhere.
Hi Robin, welcome over to IIS.

I see the hand of experience there. Thanks for the result.
I had three parts to my investigation,
What is the size of spec I could fit onto the 300D?
What would the spec look like through the tri-colour image in the 300D?
And How would the adjustable slit work?
I was happy with the results from 1 & 3, 2 was woefull (I sort of expected that).
Could you upload the .dat file for your VSpec graph as a .zip?
Could I use your www to demonstrate in my High School Physics class?
Thanks for your help.
