Re: Star's Intensity
Posted by karenacollins on Jun 14, 2014; 6:02am
URL: http://astroimagej.170.s1.nabble.com/Star-s-Intensity-tp158p161.html
Hi Shubham,
To get the stellar intensity in terms of net integrated counts with in a circular aperture, set your aperture radius to fit around the star (using the set button above the image
) and move
the mouse to the center of the star's point spread function. Then
read the net integrated counts from the bottom-right box above the
image (labeled "Int Cnts").
If you want to record that value in a data table, along with a variety of other measurements, press <Shift> and left-click near a star. You can record the integrated counts from several stars and then compare the "Source-Sky" values in the measurements table.
Karen
URL: http://astroimagej.170.s1.nabble.com/Star-s-Intensity-tp158p161.html
Hi Shubham,
To get the stellar intensity in terms of net integrated counts with in a circular aperture, set your aperture radius to fit around the star (using the set button above the image
) and move
the mouse to the center of the star's point spread function. Then
read the net integrated counts from the bottom-right box above the
image (labeled "Int Cnts").If you want to record that value in a data table, along with a variety of other measurements, press <Shift> and left-click near a star. You can record the integrated counts from several stars and then compare the "Source-Sky" values in the measurements table.
Karen
On 6/12/2014 1:31 PM, Shubham KUmar
[via AstroImageJ] wrote:
How to calculate intensity of a Star in an Astrophotograph ?
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