The combined spectra for each star, along with the ASPCAP fits, can be found in the aspcapStar files. The majority of the stars have stellar parameters determined, with corresponding best-fit, pseudo-continuum-normalized spectra. Rsync:///dr12/apogee/spectro/redux/r5/stars/ stars/
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To download all of the apStar files (about 190 Gbytes total), it is best to use rsync: rsync -dry-run -aLvz -include "/" \
Then use wget: wget -spider -nv -r -nH -cut-dirs=7 \ To download these spectra in bulk, you can generate a list of spectra you wish to download in a text file where each line looks like “/”, for example: 4289/apStar-r5-2M05370702+6137006.fits Note that there can be both apStar and apStarC results for the same star, if it was observed both before and after commissioning. Observations taken during commissioning were not combined with observations taken after commissioning, so stellar spectra from commissioning data are stored in files with the name apStarC. In this case, APRED_VERS is r5 and APSTAR_VERS is stars. For example, one of these files may be downloaded as follows: wget -spider
Within each of those directories, the spectra are organized by their APOGEE ID. There is a large directory of location IDs, each of which corresponds to a particular line of sight in the survey. In the path to this file, APRED_VERS refers to the reduction version used to extract the spectrum for each visit and APSTAR_VERS refers to the version of the combination of the spectra into a single spectrum. The combined spectra for each star can be found in the apStar files. Also check the status page for outage announcements. If you have difficulty connecting to, try instead. The SAS website /sas/dr12 (US West Coast) is completely mirrored at /sas/dr12 (US East Coast). Thus it is recommended to use wget to initially fetch the data, and use rsync only to confirm that the data you have is correct and complete. The number of rsync connections is throttled but the number of wget connections is not. If you are having any difficulty with rsync URLs, check the notes below. Rsync -dry-run -lv rsync:///dr12/boss/spectro/redux/platelist.fits. Or for rsync drop the “sas” from the URL, e.g., wget commands use the same URL as you would in a web browser, e.g., You have to remove those command line arguments for these commands to actually download data. NOTE: all rsync commands on this page have -dry-run added to them, and all wget commands have -spider added to them. This will be faster for you and easier on our servers. If you need a substantial fraction of that data (>1 TB), please contact the helpdesk to arrange a custom data transfer. Note that the total SDSS-III data volume is > 100 TB see the data volume table. See the Data Model for a description of the directory structure and file formats.
All data can be downloaded directly from using the rsync or wget commands.
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