Circular masking for images of Quantifoil grids

Micrographs with Quantifoil grids have round holes surrounded by the grid background. There may be particles in the background area, but only particles inside the hole should be selected.

These procedure files apply a circular mask to these images to eliminate the surrounding background:
cmask.spi
cmfull.spi

Micrograph after cmask.bat

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Source: quantifoil.html     Created: 5/31/01     Bill Baxter

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