Hans wrote:You could try to seal the hologram quickly while it is still at it's brightest. Perhaps with a glass plate and some kind of water proof glue at the edges or thin rubber strip.
I did it yesterday. I put wet plate, emulsion side on a transparency sheet, to seal it. 24 hours after, hologram remains bright. Transparency sticks to
the emulsion without glue or anything else.
May be we discovered a new (wet not thermal) developing method?
I will give it to stay several days to see how long it lasts without deterioration.
Here is the photo, right from the bath. Drops are still visible.
Exposure time was 1 min, beam diameter 4.5 cm, power 50mw. That gives about 200mj/cm2. It is 4 times less sensitive then emulsion with TMG,
but is in the same order than standard DCG sensitivity to green!
Saludos,
Raúl.