ERROR: FXF: must specify which FITS extension

Skyler Grammer wrote on Aug 19, 2009

I'm trying to view raw multifiber spectra. I would like to extract the 1d spectra from the 2d spectra. It would seem as though apall would be the task to use. However, I receive the following error: ERROR: FXF: must specify which FITS extension. I can't seem to find anything in the help file for apall or on the net about the solution to my problem. Any ideas?

---

Mike Fitzpatrick wrote on Aug 19, 2009

It's nothing peculiar to APALL, the message just means that you have a Multi-Extension FITS file and so need to specify the image extension to use, e.g.

 cl> imstat mef.fits[1]

You can read more about the FITS kernel usage at http://iraf.net/irafdocs/fits_userguide/

-Mike

---

Last post on Aug 19, 2009