4. Crowded field photometry

Todo

Not finished.

There are three steps for obtaining your final (matched, combined, and transformed) magnitudes for your observed field:

4.1. Find stars

Todo

Not finished.

Warning

This script assumes that the fitstats script was previously used and hence that the fitstats.dat file exists in the output/fits_find folder.

find_stars parameters

  • fits_find field
  • filter_proc U
  • find_method DAO
  • thresh_find 5.
  • round_method AND
  • round_max 1.
  • do_plots_F y

The find_stars script uses one of two methods to detect stars in your observed field: IRAFStarFinder or DAOStarFinder.

The input folder is input/fits_find

The output folder is created as output/fits_find

4.2. PSF photometry on detected stars

Todo

Not finished.

psf_phot parameters

  • fits_psf field/stk_fcd0044.fits
  • filter_psf V
  • fitshape 3.
  • group_sep 2.
  • psf_thresh 5.
  • niters 1
  • do_plots_G y

4.3. Match and transform

Todo

Not finished.

match_transf parameters

  • match_folder field
  • load_format allstar, list
  • #load_format default
  • ref_frame none
  • maxrad 5.
  • method mean
  • do_plots_H y