ColorPro Manual
ColorPro is a highly automated program for obtaining robust photometry
across images of varied PSF.
You provide:
Images with correct WCS headers (incl. RMS & weight
images, as
desired)
Image PSFs
Zeropoints (and if desired, Extinction and Saturation Level)
Object detection: SExtractor configuration file -OR- pre-defined
segmentation map
a configuration file
ColorPro produces:
A single catalog with robust photometry in all of your filters
The WCS headers are important to get right, as these will be used to
align the images to one another. If you're unsure about your WCS
headers,
you will want to check the remapped images "*2A.fits" to make sure they
line up to images in the "A" frame (or photomtery frame).
You must also provide image PSFs, or Point Spread Functions.
(The file names must correspond to the filters, as described below.)
These PSFs will be used to:
1) tell which images are considered "blurry" (of poor PSF) relative to
the "photometry frame" image
2) degrade the latter to the PSF of the former ("blurry image").
If obtaining image PSFs seems like an investment of too much work,
you could try approximating with a Gaussian PSF with the correct width.
I hope to automate (or at least semi-automate) the task of obtaining
the PSF for
each image. Selecting proper stars proves tricky to automate...
We encourage simple (one letter) names for each filter, "b" for
example.
In the final catalog, the "b" column will contain the magnitudes for
filter "b".
Meanwhile, the images will be named b.fits, b_weight.fits, b_rms.fits,
bpsf.fits.
If your images don't have such simple names, ColorPro will create links
to the filenames you provide in colorpro.in (see below).
We now walk you through:
Input configuration file: colorpro.in
Running ColorPro
Output Catalog: photometry.cat