The gratings software for Chandra consisted of many tools which formed a pipeline when strung together. 'tg_create_mask' is just one tool which calculates the mask regions of the grating arms for Chandra flight L1 grating data files. The output is a region file(s) in sky coordinates.
Please check the 'Readme' file for more information.
Download tar file [Note - code does not compile since it is outside the Chandra software framework]
View individual files from the tool here
For more information on how this tool fits into the grand scheme of Chandra data processing, please look here:
Chandra Standard Data Processing link
Our group is responsible for new calibration techniques for Hubble instruments. We are currently working on a model-based dispersion solution for the Space Telescope Imaging Spectrograph (STIS). This project uses a handful of fitting tools which are based on simulated annealing as the work-horse fitting power. For more information on simulated annealing, please look here: Simulated Annealing.
A standard version of the anneal code was used as the base; the STIS model was written on top of annealing package. At this stage, in 1999 I inherited this code and have maintained and updated the annealing tools for our groups' needs. The main purpose is to optimize parameters of the STIS 2D-echelle-dispersion model on observational data. The tool 'fitlines' is the task that uses the model to find lines (from a line list) in observed data and to construct an observed input data file for further iterations of the fitting. 'fitlines_script' is a wrapper in Korn Shell.
Please check the 'Readme' file for more information, the 'make' instructions and sample command.
Download tar file [Note - code compiles with local link to cfitsio library]
View individual files from the tool here
The Post Operational Archives external iraf package (STPOA) is released to the Hubble user community whenever there is a substantial update to the pipeline and/or tools. This script is used to bundle the package for the ftp site as well as the web download area. It gets a copy the current STPOA version of out the cvs repository; it cleans up the permissions and links; it bundles it up for distribution; places the results in ~ecf-poa/releases location; and lastly updates the web pages with the new release if needed.
This script was written to easy the release engineering activities of my position and to standardize the instructions so that anyone on the team can perform these duties without having to type each command following a 'readme' file.
View ascii text shell script from here
The pipeline and tools can downloaded from our web and/or ftp area. The package requires iraf/stsdas/tables in order to run. I have written all the tools, upgraded the pipeline from the stsdas version and have written all the documentation. The code is in F77.
Web link of the lastest STPOA download area for more information on this software
Updated December 2002, aalexov@eso.org