Publically Available GMOS Data

Data taken as part of GMOS System Verification (SV) or for other engineering purposes that are deemed to be of scientific value are made public after an assessment period typically not longer than 2 months. You are encouraged to take these datasets and assess or use them yourself. See also:

• System Verification Plans for GMOS-North and GMOS-South
• GMOS System Verification Modes

The available GMOS data packages are listed below. The table includes the data package reference name, (astronomical) target name and a brief summary of the data. The description is contained within the data package itself. Click on the hyperlinks to download the raw or processed data (generally the processing was taken to a state that allowed quality assessment and therefore may not represent the best possible reduction e.g. for scientific analysis).

The data sets are saved as gzipped tar files, and should be saved to disk. Smaller programs are distributed as one file containing both raw and reduced image. For larger programs there will be one file containing all the reduced images and documentation, while the raw data are distributed in gzipped tar files, one for each night's data. Calibration data, including calibration unit flats, darks, and standard star measurements are available in separate gzipped tar files. You may retrieve these files by using "shift+click" or "right-click" plus choose "save" from your browser's menu. Alternatively, e-mail svdata@gemini.edu for a DAT, EXABYTE or CD-ROM of your requested dataset.

In addition to the gzipped tar data sets, preview images and final co-adds (JPEG or FITS formats) are available for some data. The text files that describe the data (distributed with the tar files) are also available. Observing Tool (OT) files in XML format are available for some programs.

If you do download a data package, please send a brief e-mail with the data package name to svdata@gemini.edu so that we can log usage of the data and contact you if we subsequently discover any problems with these data. We would also like to know of any scientific issues with the data you may discover that may help us make future observations more accurate or scientifically useful. Any use of the data should include the usual Gemini acknowledgement.

Other useful Links:

• General GMOS Information
• Gemini IRAF package for GMOS data reduction
• Observing Tool (OT) Information

Last update November 3, 2004; Rodrigo Carrasco
In its original form October 13, 2004; Inger Jørgensen