Spectorphotometry standard stars

delta_kuadrant wrote on Dec 03, 2009

Hi all

Where I can find or download spectrophotometry standard stars for IRAF database? and how can I integrate those stars into database?
I want to do flux calibration for my spectra
sorry for noob questions

thanks

-PJ-

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Mike Fitzpatrick wrote on Dec 03, 2009

The standards files are located in the noao$lib/onedstds directory, see the README file in there or "help onedstds" for a listing of what's already included in case it meets your needs. Tasks like STANDARD find this database using the 'caldir' package parameter for ONEDSPEC, you can either create a similar directory yourself and set the caldir or else add new data to the onedstds$ directory itself.
The format of each file is a 3-column whitespace-delimited table of (wavelength,magnitude,width) there wavelength/width are specified in angstroms.

As for where to find such data, Google is your friend as are the ADS abstracts.

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Last post on Dec 03, 2009