minor updates to spectrum generation
minor updates to spectrum generation

Ignore-this: 52c0adcb0e081d3738383d70177d8fd4

darcs-hash:20100224125233-9241b-233ecdd384ec1ad4df2d3bd2bffe1525d2c48fb7.gz

tmcdonell/hfx,tmcdonell/hfx,tmcdonell/hfx