Difference between revisions of "SHIPsphotLinks"
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: [http://www.aperturephotometry.org/aptool/ www.aperturephotometry.org] | : [http://www.aperturephotometry.org/aptool/ www.aperturephotometry.org] | ||
: [http://coolwiki.ipac.caltech.edu/index.php/Aperture_photometry_using_APT Using APT] | : [http://coolwiki.ipac.caltech.edu/index.php/Aperture_photometry_using_APT Using APT] | ||
| + | : [http://www.youtube.com/watch?v=_w_5DgB0vKw Youtube Tutorial (by Luisa Rebul)] | ||
Revision as of 20:18, 1 May 2013
Purpose of this page:
- Provide all the references we need to perform photometry and related topics
Photometry Reference
- Aperture Photometry Overview (from Luisa Rebull).
- Summary of Aperture photometry steps (taken from above Overview).
- Once you have calibrated data (ground- or space-based), the basic series of steps for doing aperture photometry are as follows, with many different options and parameters for each step:
- Detect objects in image, if doing this automatically (human eyes are good at this).
- Determine center of object.
- Determine background -- e.g. determine what the signal would be in the aperture if the star was not there. (Usually means defining an annulus around the object at some distance from it.)
- Summing up the light in the object (define the size of the aperture to use, subtracting off the background).
- Apply aperture corrections, if necessary.
- Check your numbers!
Photometry Tools
NITARP's own vintage.
