rhead{textsc{includegraphics[height=36pt]{my_pict}}}
renewcommand{headrulewidth}{0pt}
setlength{headheight}{40pt}

usepackage[textwidth=17cm]{geometry}

documentclass[english]{article}
usepackage[utf8]{inputenc}
usepackage[T1]{fontenc}
usepackage{babel}
usepackage{amsmath}
usepackage{graphicx}
usepackage{fancyhdr}

pagestyle{fancy}
fancyhf{}

renewcommand{headrulewidth}{0pt}
setlength{headheight}{40pt}

lhead{textsc{includegraphics[height=36pt]{SciData_logo.jpg}}}
rhead{textsc{includegraphics[height=36pt]{./paper_figures/OF_logo.png}}}


usepackage[textwidth=17cm]{geometry}

begin{document}