Not curtains. But what? No hints but if you guess correctly I will post a comment confirming that you are correct. Ok, one hint: it's an ordinary object not something rare that would be impossible to guess.
Thanks to those of you who hazarded a guess. It's a picture of part of a clear glass fruit bowl that has some interesting contours. When I placed some red paper behind the bowl and used a narrow depth of field some of the contours of the bowl started to look like smooth pleats of fabric. It was then a lot of trial and error with focus, paper, and light to develop the concept of a split curtain, which I thought had an interesting Scriptural connotation.
Much better viewed on black...
Tags: abstract photography conceptual photography red red curtains Split Curtain