Performing multiaperture photometry - a few problems

Posted by Tamar on Feb 16, 2019; 10:22am
URL: http://astroimagej.170.s1.nabble.com/Performing-multiaperture-photometry-a-few-problems-tp1113.html

Hi,
I am trying to perform multi-aperture photometry on an open cluster image, and I am encountering several difficulties that I would appreciate your assistance with:

1. I check the "Total comp star counts"  in the "more aperture photometry settings" to have the total counts displayed in the measurement table. However, this data does not appear when I generate the table.

2. Apertures that were previously chosen in a certain image cannot be deleted from it, even when I delete the relevant lines from the header, or use a different fits file. They keep on appearing when I press the "perform multi-aperture photometry" icon. How do I make AIJ completely forget about these apertures?

3. I obtained an astrometric solution for my image using Astrometry.net and I am using the solved image to perform aperture photometry. When I open the image in AIJ it shows the right coordinates. However, when I export the results of the multiaperture photometry, including also the RA-DEC coordinates, it prints out coordinates which are a bit off for the comparison stars (and the right coordinates for target stars). What is the cause for this?

I would appreciate your help!
Tamar Faran