FAST Spectrograph

Processing FAST Spectrograph Data
Jessica Mink, 2023-March-7

Telescope Data Center 		FAST Spectrum
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FAST Data Directories

All FAST data since January 5, 2005 has been reduced more or less this way

Task

Commands to Reduce Last Night's Data

4. Extract, Cross-correlate and Check spectra

In the reduction/working configuration directory for the date, extract 1-D spectra, cross-correlate, and check them using the IRAF tasks fastpack.beepbeep for varied spectra or fastpack.beepstar for stellar spectra. In the reduction/working configuration directory for the date, extract 1-D spectra, cross-correlate, and check them using the IRAF tasks fastpack.beepbeep for varied spectra or fastpack.beepstar for stellar spectra. Once beep* has been run, rvall or rvstar can be used to re-correlate all of the spectra in the directory with the other set of templates.

To re-correlate only some of the spectra, create a sub-directory such as temp/, and move the appropriate *.ms.fits files to it, run rv* on them, move them back to the configuration directory, and rerun mkzout and fastarc.

To extract second spectra from any images, create a sub-directory and copy the appropriate *TF.fits files to it. Change the file names and OBJECT, RA, and DEC header keywords to match the name and position of the object you wish to extract, and add 1 to the end of the file sequence number in the name of the file and the RFN keyword. THen run beep* and re-extract and cross-correlate the spectra. Then mv the *TF.fits and *.ms.fits back to the configuration directory and rerun mkzout and fastarc in that directory.

1. Catalog FAST raw data archive

2. Transfer raw data to reduction/working directory

3. Align spectra for one configuration

4. Extract, Cross-correlate and Check spectra

5. Make sure that files are archived appropriately

6. Distribute FAST data from one night

 In IRAF and the appropriate configuration directory 

 
ecl> beepbeep
/home/tres/tred/2021-04-20

. . .

ecl> beepstar

. . .

Or for specific spectra: 

> beepbeep 21-06-01
. . .