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SOFIA FAQs

Question not answered?

Email the helpdesk: sofia_help@sofia.usra.edu

FAQs

  • FAQs
    • GREAT
      • What is the size of the honeycomb map?
      • How do heterodyne instruments work?
      • What is the different between brightness temperature and radiation temperature?
      • How do I get from brightness temperature to flux density?
      • What do the GREAT filenames mean?
    • EXES
      • How do I get an absolute flux calibration of EXES data?
    • FORCAST
      • Why are the USPOT exposure times higher than before (before Cycle 10)?
      • How can we check for memory/persistence issues?
      • Should I worry about saturating the FORCAST detector?
      • How do I find the on-sky angle of the FORCAST grism slit?
      • What is the FORCAST photometric uncertainty?
      • Has a COMA aberration correction been done on the data?
      • Is there a ghost in my data?
      • How many dithers do I need for photometry?
      • Can subtract the PSF from my image?
    • FIFI-LS
      • How to get an upper limit on a FIFI-LS detection?
      • Should I use FIFI-LS or GREAT for [CII]?
      • What is the beam/psf size of FIFI-LS?
      • What is the pixel size of FIFI-LS data?
    • The Data and Data Analysis
      • What is the boresight?
      • What is the best way to access the FITS header information?
      • How to get the PWV from the header
      • What version of redux was used to reduce my data?
      • What do the quality assurance comments mean, and should I be worried?
      • How do I find out if the data products are the raw or calibrated files?
      • I can’t tell if my detection is real or noise, what can I do?
    • The Observatory
      • Where can I access the SOFIA filter curves?
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