My goodness what a basic error, how embarrassing! Thank you for resolving this for me.
For anyone else interested, here’s the working setup I ended up with for a basic after image effect that I’ll be using in my [CRT screen construction suite][2]:
My goodness what a basic error, how embarrassing! Thank you for resolving this for me.
For anyone else interested, here’s the working setup I ended up with for a basic after image effect that I’ll be using in my [CRT screen construction suite][2]: