Oh oh
This is a new main header…
I am starting on on holography again…
New advances have left this field open.
Cheaper lasers may make DCG plates easier to expose.
Polymer films with diffraction efficiencies greater than 95% are available and reasonably sensitive and … polychromatic.
Picked up a kit from Litiholo
5 minute exposure seems daunting but we’ll see when it gets here.