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OSIRIS
Pipeline Download
OSIRIS modification to the data reduction pipeline are posted here.
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We have released the latest version of the pipeline (version 2.2).
There have been significant improvements and changes to the pipeline,
we highly recommend that all observers refer to the OSIRIS manual for your reductions.
Often with many users and differing data in terms of targets and observing modes, problems with a new pipeline version
will be discovered.
Please contact us with any pipeline bugs. We will try to solve them
in a timely fashion and post a new pipeline with listed changes on this website.
Thank you for the team effort!
Software Installation Script for Mac Os X - This script automatically downloads and installs the pipeline and all related packages into a user specified directory with the correct environmental variables (should also run on linux and unix) - Download (.py)
Data Reduction Pipeline v2.2 - Download (tar.gz)
Released April 1, 2008
Data Reduction GUI v2.2 (ODRFGUI) - Download (tar.gz) - Download (zip)
Released April 1, 2008
Example OSIRIS frames to practice in QL2 - Star (R=14.5) in the Hubble Deep Field - Raw Frame - Reduced OSIRIS Frame
Major Changes to the Pipeline for Version 2.2 from Version 2.1
• All modules in the pipeline are able to reduce the new K-band with attached smaller 100mas pupils (Kcb, Kc3, Kc4, and Kc5)
• Added new module Scaled Sky Subtraction - scales sky frames to the object frame based on the varying intensities of OH sky emission lines
• Added a new feature to Combined Frames, which allows users to specify either a MEDIAN or AVERAGE combine routine
• Added a new feature to Assemble Data Cube, which now writes out WCS header information into each reduced cube. This is also read in with QL2 and displayed (see QL2 manual for v2.2 changes)
• The ODRFGUI has been updated to include all changes for the new "Kc" modes and all new parameters with the v2.2 pipeline
Major Changes to the Pipeline for Version 2.1 from Version 2.0
• The Combine Frames module now uses an average to compute the output file instead of a median.
• We are recommending that users now use the Save="1" option within the "Mosaic Frames" module to output the final frame instead of a separate call to "Save Dataset Information". This change has also been implemented in the DRFGui Templates.
• The correct dispersion routine did not work in all orientations due to a bug with setting the output image dimensions. This has been fixed.
Major Changes to the Pipeline for Version 2.0 from Version 1.0
• There is now a gui so hand editing of XML files is no longer needed except for special cases.
• Added new module "Correct Dispersion" - corrects for atmospheric dispersion and instrumental dispersion and should be performed on all OSIRIS cubes after "Assemble Data Cube" in the final reduction processes.
• Added a new module "Extract Star" - extracts 1D spectrum of a stellar object from an OSIRIS cube.
• Added a new module "Remove Hydrogen Lines" - takes a 1-D spectrum and attempts to remove absorption lines due to hydrogen. The primary purpose is to remove hydrogen absorption lines from telluric standard stars.
• Added a new module "Divide by Blackbody" - divides a 1-d, 2-d or 3-d spectra by a blackbody of given effective temperature (Kelvin). This is primarily useful to fix telluric spectra, and accepts different wavelength ranges.
• Added a new module "Divide by Star Spectrum" - Divides cube by 1-d stellar spectrum. This is primarily useful for telluric correction.
• Fixed wavelength solution to resolve small ~0.1 A shifts between each lenslet wavelength solution.
• The "Mosaic Frames" module now updates the RA and DEC header in the output file.
• The "Save Dataset Information" module has a new naming convention for output files (ie, s070404_a017001_datset_Kbb_100.fits will now be s070404_a017001_Kbb_100.fits, without the "datset").
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