Comments on MOSES data reduction

C. Kankelborg

2006 September 2

Wrote flat_field_figure to make jpeg images of the flat fiels for presentations, etc.

Below is an example beam image, det1ff_042605-2ndBeamUnsharp.jpg. It is unsharp masked to remove large scale trends, making the details easier to see.

Two things I don't understand about the above image:

• The mesh shadow(?) appears bright rather than dark. Can this be explained?
• There are dark vertical streaks in seemingly random locations. What could produce this?