xmm_sky2det_regions

Converts DS9 regions files into detector coordinates for use with mos-spectra/pn-spectra
Handles circles, ellipses, boxes, polygons

Currently runs from placing inside analysis directory
Takes two arguments; -obj-image-sky.fits, ds9 region file in [DS9/Funtools, CIAO, SAOtng] formats
Third optional argument is output file name (expected without file extension!)
Output are two region files in detector coordinates
-<detector><exposure>_outfile.reg (DS9 formatted)
-<detector><exposure>_outfile.txt (XMM formatted)

Sky (left) vs Detector (right)

Pre-reqs

bc - Basic Calculator 1.07.1
wcstools 3.9.5

Make sure to have SAS paths set appropriately
SAS_CCFPATH, SAS_CCF and SAS_ODF

Example

ds9.reg contains the region:
box(9:56:35.9111,+69:36:53.095,656.723",85.926",320.71996) # color=white width=4

[USER analysis]$ ./xmm_sky2det_regions.sh mos1S001-obj-image-sky.fits ds9.reg

Output detector regions in files
mos1S001_ds9.reg:
box(596.9,-6683.9,13134.4599958949,1718.5199975862,358.561930869141) # color=white width=4
mos1S001_ds9.txt:
&&((DETX,DETY) IN box(596.9,-6683.9,13134.4599958949,859.2599987931,179.2809654345705))