 | What time keywords should I use from the header for the exact start of my AOR? |  |
 | In a nutshell, DATE_OBS is the most accurate, absolute measurement for comparing with astronomical emphemerides. SCLK_OBS (in real sec) is good for relative timing comparisons within an AOR or even a campaign.
More words on this:
The DATE_OBS value is |
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| What is the general philosophy governing SSC data processing? |  |
| The general philosophy is to do a few things, and do them well! Data processing for each of the eight pipelines (one per observing mode) is highly automated. A modular design allows components, or individual processing steps, to be easily updated. The 'at |
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| What is the basic format for SSC processed data? | |
| SSC data is electronically accessible as FITS files (no extensions). The end-product files include complete calibration information and intermediate files for individual processing 'steps.' |
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| What are the primary data products that the SSC generates? What is a BCD? What is a post-BCD product? | |
| In general, the eight SSC data processing pipelines convert spacecraft engineering data into scientifically useful data. Raw data (engineering and science) are received at the ground tracking stations via telemetry and forwarded to the Spitzer Fl |
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| What other products are available to investigators? | |
| For each AOR, the SSC also provides calibration files, intermediate data files, quality analysis files, all with complete header information. |
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| Where should a typical observer start their analysis? | |
| If you were asking for pointers to documentation, this page is one-stop-shopping for investigators looking to get started working on Spitzer data -- archive access, data handbooks, softwar |
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| What is the filenaming scheme for all these files? | |
| If you look either in the individual instrument pages (IRAC, IRS, MIPS |
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| Are you planning data analysis workshops (at the SSC or the AAS)? Can I come visit the SSC to learn about data analysis? | |
| We hope our documentation is extensive enough to cover most of the issues with Spitzer data, and we are working continuously on improving it. Our Helpdesk is available to answer any Spitzer-specific data reduction questions.
As the Spitzer Space Te |
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| How can I tell which pipeline processed my data? How can I tell if my data have been reprocessed under the most recent pipelines? | |
| This is a multi-step process at least at the moment.
Check the header of one of your BCD files and look for the keyword 'CREATOR'. (e.g., imhead blah_bcd.fits | grep CREATOR) This is the software version used to process your data.
Check th |
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