A fantastic collection of various deep space objects, imaged in HaLRGB by Jim Misti. Working with just the L (luminance) frames, before delving into HaLRGB combining, is great way to learn the ropes.
Results are free to publish, as long as they are credited "Image acquisition by Jim Misti".
StarTools does more than just help you make "pretty pictures".
Exclusive to the main screen, the buttons that activate the different modules, reside on the left hand side of the main screen.
Select the 'decode the data from a Base64 string (base64 decoding)' radio button.
You can convert everything you see to a format you find convenient. Give it a try!