# IRC_SPEC_TOOLKIT Change Log

======================================================================
[20080528]
----------------------------------------------------------------------
The followings are from the Release Notes. Please see the document
as well as IDUM.

+ TOOLKIT bug fixes
 - X-shift value of the spectroscopy apertures have been corrected
 - Removing some sub-frames for stacking on ds9 works properly
 - Appropriate flat selection according to the observation date works
 - Mask for sky subtraction adjusted for each sub-frames
 - Bitshift (wraparound) correctionproperly working
 - Short-exposure frames are properly processed
 - Wrong flux scale of the slit spectra with /diffuse option corrected

+ New tips:
 - Flat fielding for slit spectroscopy data.
 - Removing effect of column pull-down in NIR images.

+ Improvement of calibration/processing parameters
 - Source mask sizes improved.
 - Sky fitting over stacked images improved
 - Dark subtraction for slit spectra at NIR improved

+ New features
 - New option for masking column-pulled-down columns for NIR
      spectroscopy (NP/NG) implemented.
 - Spectroscopy WCS attached in output FITS images.
 - Saturation masking implemented.

+ Changes in command specifications 
 - Changes of 'change_offset' command format

+ Calibration data updates
 - NP/SG1/2 response curves updated
 - Aperture correction tables updated

======================================================================
[20070913]
----------------------------------------------------------------------
There are many major changes in the program. See IDUM for details.

======================================================================
[20070306]
----------------------------------------------------------------------
Title:
   A bug in writing target tables for MIR-S and MIR-L was found,
   and is corrected.
Problems:
   Coordinate conversion that is only required for NIR (that is
   rotated by 90 degree) works also for MIR-S and MIR-L.
Effect:
   Wrong coordinate conversion was applied for MIR-S and MIR-L,
   and the results were recorded on *.target_table.tbl
Extent of the impact:
   For MIR-S and MIR-L. No problems for NIR.
   The program was for writing pixel coordinates of the sources
   onto disk files, just before finishing the main program (after
   calibrating everything).
Modified file(s):
   IRC_UTIL/write_target_table.pro, called from
   IRC_UTIL/write_all_output.pro

----------------------------------------------------------------------
Title:
   A bug in checking input/database files, before start actual
   processing the data, was found, and is corrected.
Problems:
   Not well known. not really a problem?
Effect:
   Nothing? (because the problem was found within the IF condition
   that will be never permitted...?)
Extent of the impact:
   None?
Modified file(s):
   IRC_SPECRED/do_param_initialize.pro, called from
   IRC_SPECRED/init_specred.pro

----------------------------------------------------------------------
Title:
   The same program exists in the Spitzer's SMART package, and the
   software may confuse to find the appropriate procedure.
Problems:
   depending on the path settings, the IRC_SPECRED package may read
   the get_aot_info.pro of the SMART package.
Effect:	
   Error stop within the procedure (variable undefined).
Extent of the impact:
   Error stop before finishing up the irc_specred.
Modified files(s):
   rename IRC_UTIL/get_aot_info.pro to IRC_UTIL/get_aot_info_irc.pro,
   and modified IRC_SPECRED/do_param_initialize.pro that calls the
   get_aot_info.pro

======================================================================
[20070303]
----------------------------------------------------------------------
Title:
   A bug in plotting the NP spectra was found, and is corrected
Problems:
   The 'nsum' parameter in 'plot_spec_with_image' procedure does
   not work correctly for the NP data.
Effect:
   Reduced S/N in NP spectra
Extent of the impact:
   For NP only, i.e., no problems for other grisms.
   The program is for extracting the one-dimensional spectra,
   after calibrating everything in the extracted spectroscopy images in 2D.
Modified file(s):
   IRC_SPECRED/make_spec1d.pro, called from plot_spec_with_image.pro