Data Item _em_imaging.nominal_cs
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General 
- Item name
- _em_imaging.nominal_cs
- Category name
- em_imaging
- Attribute name
- nominal_cs
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 1.5 % of entries
Item Description
The spherical aberration coefficient (Cs) in millimeters,
of the objective lens.
Item Example
2.0
Data Type 
- Data type code
- float
- Data type detail
- float item types are the subset of numbers that are the floating numbers.
- Primitive data type code
- numb
- Regular expression
- -?(([0-9]+)[.]?|([0-9]*[.][0-9]+))([(][0-9]+[)])?([eE][+-]?[0-9]+)?
- Units
- millimetres
Allowed Boundary Conditions
| Minimum Value | Maximum Value |
|---|---|
| 0 | 20 |