iraf.net

Hi Shaye,> I am an REU at NOAO for the summer, and Steve Howell suggested I
> talk to you.
>
> I am working on comet imaging. I have a coma feature that I want to
> find the centroid of. Steve suggested eyeballing a center,
> averaging rows/columns around the center, plotting the averaged
> rows/colums, and then fitting a gaussian to the plot.
>
> I tried using cimexam and limexam to plot the averaged columns and
> lines. But I could not get numbers out of that display.
>
> I can get numbers out of implot, but I can't average columns or lines.Have you looked at the ":a N" feature of implot, described in the
help page? This should average line and column plots. You might
also look at the imcentroid task for a marginal centroid, rather than
a gaussian. Various other IRAF tasks provide centroiding using
different algorithms. If you need to do this many times, would
suggest you think about scripting it.Rob