Index matching, cont

After these attempts I’ve continued refining my index matching methods and I’m two for two. I made a hologram this morning with the second piece of film that I’d TEA treated yesterday and the final hologram is nice bright and clear.

On the other hand, I’ve got to improve my pre-index methods as there were several small pieces of lint and one thread that was apparently on the film before I put it on the glass.

Fortunately none of these show up in the final image.
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Index matching

Anyone have any foolproof methods for index matching sheets of PFG-01 roll film to glass? For 4×5" sheets I’d used both mineral oil and lamp oil with decent success, although I detest the messiness of it.
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Minas Tirith

I’ve been working on a commission from a co-worker for a bit now and the last few days have been spent doing tests (I generally manage to get one in a day during the week) of new bleaches and color swelling.

[originally posted Apr 6, 2005]

[edited Apr 8 to add green version]

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Squeegeeing

The topic of film squeegeeing comes up fairly regularly on the holography forum and I’ve been meaning to write up a method that I use with good success.

Read on for more info…

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