Index of /~schmahl/bproj2size

 Name                    Last modified       Size  Description

 Parent Directory        17-Nov-2009 11:33      -  
 check_multiplicity.pro  19-Feb-2003 11:21     1k  
 check_circularity.pro   19-Feb-2003 11:21     1k  
 hsi_find_spinaxis.pro   19-Feb-2003 11:21     2k  
 crosscorr.pro           19-Feb-2003 11:21     1k  
 bessel_trans.pro        19-Feb-2003 11:22     1k  
 hsi_bproj2size.pro      12-Apr-2004 12:35    16k  

Comments on  hsi_bproj2size.pro

The purpose of this program is to determine the size of a source
using relative amplitudes found from single-collimator bproj maps for one
flare, 9 dets, one energy_band.  The method is described in
Schmahl & Hurford, Adv. Space Res. Vol 32, No. 12, pp 2477-2482.
http://hesperia.gsfc.nasa.gov/~schmahl/sizes.ps
http://hesperia.gsfc.nasa.gov/~schmahl/sizes.pdf
See the header of the program for more information.

Hsi_bproj2size.pro plots are restricted to 64 x 64 maps with 1 arcsec
pixels.

If the PLOT keyword is set, the spatial profile will be plotted
as a function of radius.  In addition, the cumulative flux vs radius
will be plotted (dashed).  If the source is a Gaussian, they
will be identical.  If there is a halo, or albedo, the cumulative
flux will be different.

Note that if the flare is not centered in the map, you will get anomalous
results, unless you set the CHK_OFFSET keyword so the program will find
the centroid of the source.

If the flare has double or triple components, all bets are off on the results.

There are 5 additional modules required for full functionality:
   crosscorr.pro
   hsi_find_spinaxis.pro
   bessel_trans.pro
   check_multiplicity.pro
   check_circularity.pro

Calling Example:

 energy_band = [12.,25.]
 obs_time_interval=['2002/02/26 10:23:56','2002/02/26 10:33:44']
 map_interval=['2002/02/26 10:26:00','2002/02/26 10:27:00']
 xyoffset = [929.,-226.]  ;improved xyoffset  -- old one: [922,-228.]  


 hsi_bproj2size,obs_time_interval,map_interval,xyoffset,energy_band,/save,/plot,/verb,file='Feb26.dat'
 
 
 

schmahl@hessi.gsfc.nasa.gov Apr 12, 2004