JohnK on the holography forum had asked if I’d experienced any problems with delayed development of VRP-M.Â He’s been working on making holograms using a Coherent 315 and VRP-M film and was wondering VRP-M was sensitive to delays of several hours between exposure and development.
I normally develop right after exposure but did the following test to find out how VRP-M behaves.
The dolmen is moving along (slowly, but moving) and last night I did a reflection color test to find out what concentration of TEA (triethanolamine) to use to get some interesting colors in the final hologram.
As a test I prepared some 2, 3, and 4% solutions of TEA and cut up a 4×6" piece of film into three sections.
the TEA was fleshly prepared and still warm and each piece of film was soaked for about a minute, squeegeed and left to dry for 30 minutes in my drying box.
The subject was a simple background that I could use to easily judge the differences in color.
After a 10s exposure the strips were developed in JD2 and bleached with EDTA and dried.
I ended up with a range of colors from yellow-red to gold that should work well in the final hologram.
At the moment I’m thinking of using a subtle range of colors rather than the more easily made red/green/orange I was thinking of. Something more along the lines of orange for the moon, golden for the terrain and a fire red for the inside of the dolmen where a fire might be.
It’s been a while since I’ve really been in the lab. After the first of the year I got really caught up in the Irish dancing events that Susan and I are involved with, did some travelling for work and then got sucked into the Irish dance St. Patrick’s "season."
Finally there’s a lull and I can get back to working on a dolmen hologram that I’ve had on the back-burner for three years.
A few weeks ago I started work on a hologram inpired by Pirates of the Caribbean and began carving a medallion that I wanted to look like the medallion featured in the movie. Unfortunately my sculpting skills aren’t yet up to that task but I was able to produce a medallion that is more appropriate for a Day of the Dead celebration and set about making a hologram of that.
Under very dim lighting I opened thecardboard mailer to find a 4×5” stack of film packed in a tightly fitting black plastic bag. Very tightly fitting. Getting the film stack back in was a pain. The film was sandwiched between two small pieces of cardboard. I haven’t counted to make sure there are 10 pieces of film but that’s what’s listed on the label.