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FAQ: Difference between revisions
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No. The INIT step uses the first 5 degrees (by default) for a number of purposes (check out the files written by INIT !). BKGINIT.cbf is essentially used only for scaling purposes; the ''real'' background calculation just requires those frames which have the reflections that are integrated. | No. The INIT step uses the first 5 degrees (by default) for a number of purposes (check out the files written by INIT !). BKGINIT.cbf is essentially used only for scaling purposes; the ''real'' background calculation just requires those frames which have the reflections that are integrated. | ||
=== I can see many diffraction spots in the BKGINIT.cbf when the BACKGROUND_RANGE is set default (first 5 degree images). When this value is set large (eg. 50 degree), no diffraction spots can be seen. It seems that this is a "real" background image. But both this two scenario produce nearly the same results (data statistics). Do I need to always change the BACKGROUND_RANGE so that there are no diffraction spots in the BKGINIT.cbf? === | |||
No. Again, BKGINIT.cbf is essentially used only for scaling purposes; the ''real'' background calculation just requires those frames which have the reflections that are integrated. Don't worry about BACKGROUND_RANGE; just use the default! The only reason to increase the BACKGROUND_RANGE is when you have so low background that even 5° of data produces many zero pixels in BKGINIT.cbf, but this is highly unlikely. | |||
== COLSPOT == | == COLSPOT == | ||