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THE OBSERVATION SECTION
The observation section is used to assign names to columns in the
observations files, and to optionally, associate error columns with
the named columns.
The observations section begins with the keyword observation,
followed by any number of name and error (name) column associations.
Syntax
observation
name number
error(name) number
The first declaration creates a name column number association. It
consists of a name followed by a column number. The name becomes
the variable name for that column.
The second declaration creates an error (name) column number
association. It starts with the keyword error, followed by a name
in brackets, and a column number. The name must be the name of an
input column previously declared in the observation section. The
error declarations are optional.
The column number must be a decimal integer greater two, since the
first column of the observations file is reserved for a matching
name. This name is used to match objects in the observations file
with objects in the catalog file.
Example
# Sample observation section for the UBV system.
observation
u 2
error(u) 3
b 4
error(b) 5
v 6
error(v) 7
x 8
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