Update app.py

app.py

@@ -21,7 +21,10 @@ st.set_option('deprecation.showPyplotGlobalUse', False)
 
 st.title("Cavity Detection Tool")
 
-st.markdown("Cavity Detection Tool (CADET) is a machine learning pipeline trained to detect X-ray cavities from noisy Chandra images of early-type galaxies. To use this tool: upload your image, select the scale of interest, and make a prediction! If you use the output of this tool in your research please cite [Plšek et al. 2023](https://arxiv.org/abs/2304.05457)")
+st.markdown("Cavity Detection Tool (CADET) is a machine learning pipeline trained to detect X-ray cavities from noisy Chandra images of early-type galaxies. To use this tool: upload your image, select the scale of interest, and make a prediction! If you use this tool for your research, please cite [Plšek et al. 2023](https://arxiv.org/abs/2304.05457)")
+
+st.markdown("Input images should be centered at the centre of the galaxy and point sources should be filled with surrounding background [dmfilth](https://cxc.cfa.harvard.edu/ciao/ahelp/dmfilth.html).")
+
 
 # Create file uploader widget
 uploaded_file = st.file_uploader("Choose a FITS file", type=['fits'])
@@ -130,4 +133,4 @@ if uploaded_file is not None:
             pass
             # st.markdown("""<style>[data-baseweb="select"] {margin-top: 32px;}</style>""", unsafe_allow_html=True)
         #     # download = st.button('Download')
-        #     download = st.download_button(label="Download", data=res, file_name="predicted.fits", mime="application/octet-stream")
+            download = st.download_button(label="Download", data=res, file_name="predicted.fits", mime="application/octet-stream")