sudo mkdir -p /iraf/iraf/
cd /iraf/iraf/
sudo tar -zxvf ~/Downloads/iraf.macx.x86_64.tar.gz
export iraf="/iraf/iraf/"
export IRAFARCH="macosx"

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install x11
http://xquartz.macosforge.org/landing/

----
install xgterm and ds9

sudo mkdir /iraf/X11-iraf
cd /iraf/X11-iraf/
sudo tar -zxvf ~/Downloads/x11iraf-v2.0BETA-bin.macintel.tar.gz
cd /usr/local/bin/
sudo ln -sf /iraf/X11-iraf/bin.macintel/xgterm

sudo mkdir /iraf/ds9
cd /iraf/ds9/
sudo tar -zxvf ~/Downloads/ds9.darwinlion.7.0.2.tar.gz
cd /usr/local/bin/
sudo ln -sf /iraf/ds9/ds9
sudo ln -sf /iraf/ds9/ds9.zip

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install iraf
sudo /iraf/iraf/unix/hlib/install 

------
externals

cd /iraf/iraf/extern/
sudo ./configure
sudo make check
sudo make fitsutil mscred mscdb stecf tables stsdas ... 

------
setup user

cd ~/
mkdir iraf ; cd iraf
mkiraf

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STSCI PYTHON
requisitos: Numpy + xcode

pip install d2to1
pip install stscipython