Nonius logo KappaCCD User Manual 
 Revision 1.10, Last Update 1-July-1998
KappaCCD Glossary

Dark current

A source of noise that builds up during the exposure. The effect is relativily small compared to the read out noise for short exposure times. For long exposures a dark current file can be used to correct for this effect.
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Extender ring

A metal ring, mounted between the goniometer head and the goniometer to increase the height of the crystal. Used to bring crystals that are mounted on too short pins on the correct height.
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Distortion

A small positional difference between the front and back positions of the optical fibers in the taper. Corrected for by a distortion table in the calibration file.
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Initial.set

This file contains menu setting parameters of the KappaCCD Denzo-SMN GUI.
It must be loaded through the File menu when a new compound is used to initialize the menu parameters
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Makesav

Makesav creates a *.sav file from a group of KappaCCD image files by analyzing all file headers.
The resulting *.sav file can be loaded in to the Denzo-SMN GUI so that all parameters are defined in accordance with the measured data sets.
(Earlier releases used makeset, which created a *.set file.)
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Mkscalein

Mkscalein creates an input file for Scalepack from a group of Denzo *.x files by reading their contents.
The resulting file scale_all.in can be used to control Scalepack. This is usually done as:

scalepack < scale_all.in

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Sensitivity

Every pixel in the camera has its own sensitivity. To correct for this effect the software uses a sensitivity map.
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3D Window

During indexing, refinement and integration the local cell parameters are fitted using  a batch of frames. This number of frames is indicated by the number for 3D-window.

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