Re: Accuracy of Centroid Measurement

Posted by karenacollins on Oct 07, 2014; 2:38am
URL: http://astroimagej.170.s1.nabble.com/Accuracy-of-Centroid-Measurement-tp184p187.html

Hi Dave,
You must be running an old version of AIJ. You can check by going to
AIJ_Toolbar->Help->'About AstroImageJ...'. Older releases only offered
the center of mass centroid method. You should update to the latest
release, which is 2.1.5. If you don't see the Howell option after
upgrading, please let me know. The upgrade is an easy. Follow these
instructions.

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After installation of a full release of AIJ, be sure to use the AIJ
update feature to update to the latest build. Follow these steps:

1) Start AIJ and go to the AIJ toolbar menu item: Help->Update
AstroImageJ...
2) Select the latest version from the pull down menu
3) Click OK and 3 files will download and install
4) AIJ will then automatically close
5) When you start AIJ again, you will be running the new version

The 'daily build' in the pull down menu is the latest beta version. If
you are having a particular problem, or just want to help out with beta
testing, download that version rather than the highest numbered version.
When you are running a daily build version, the AIJ version number will
begin with "db" to indicate that it is a daily build.

Release notes are available by clicking the "Release Notes" button on
the update panel.

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Karen