plotcuts -- overplot cuts from multiple places along a spectrum
Usage
plotcuts image
Parameters
image
Image(s) to plot
y1
First row to plot
y2
Last row to plot
nsum=5
Number of columns to coadd
Description
This task will plot three column cuts along the specified
image(s), showing only the regions between rows y1 and
y2. The column cuts are taken at the center of the image
and near the left and right edges. The plot is scaled to the peak
value occurring within the range of rows in the image. Visual
inspection of the resulting plot can reveal whether the removal of
spatial distortions is adequate.
Examples
Plot three cuts along the spectrum in image
24des0014y, extending from row 520 to 640 and
including 5 columns in each sum:
plotcuts 24des0014y y1=520 y2=640 nsum=5
The alignment of peaks in the resulting plot shows that the
distortion removal across the spectrum is good.