References for data used in current DOLPHOT module

- Zero Points: ACS zero point calculator used 2/09/2025, using 7/1/2004 for pre-2006 WFC, 7/1/2009 for post-2006 WFC, and 1/01/2007 for HRC
- Encircled Energy: WFC3 ACS ISR 2020-08, HRC ACS ISR 2012-01
- CTE Corrections: ACS-ISR 09-01 (Chiaberge et al.)
- PSFs: Tiny Tim 6.2 using G2V spectrum; Jay Anderson's PSFs replace Tiny Tim cores if selected
- Distortion Coefficients: WFC 4bb1536cj_idc.fits (11/11/2020, ISR ACS 2020-09), HRC q692007bj_idc.fits (6/09/2006)
- Pixel Area Map: WFC using time-averaged PAMs (2002-2022) from the STScI website, as of 9 February 2025.  HRC using recommended process in multidrizzle, as of 2004 Feb 11.

Older Reference Files
- To use Zero Points and EE curves from ACS ISR 2012-01, copy acs/data/filters_2012.dat to filters.dat
- Distortion coefficients from 3 March 2006, are available as hrc_idctab_2006.dat and wfc_idctab_2006.dat, but may need to be reformatted.
- Distortion coefficients from 21 October 2002, are available as wfc_idctab_2002.dat, but may need to be reformatted.
