Clean up images for The Sun and The HiSPARC Detector
Clean up images for Radio Telescopes

eps to pdf for vector images
eps to jpg for bitmap image
Remove .fot files

Also added *.fot to gitignore
Clean up images and .tex for Sources of Cosmic Radiation
Update Data Processing - Periodic Data

Update data.hisparc.nl screenshot
Updated text
Clean up images for The HiSPARC Detector

eps to pdf