View Full Version : Solar conditions applet on QRZ.com home page - Help!
Can someone explain to me what the different colors I see from time to time on the 'sun disk' that is displayed on the solar conditions applet near the top of the QRZ.COM home page mean?
Tnx de Arnie W8DU
06-04-2012, 07:28 PM
For understanding the Data and Images from the Sun read http://www.hamqsl.com/solar2.html
Thanks Vlad. Very informative. Now if I only could figure out what the different colors of the sun disk mean for HF propagation. hi hi.
They are just false colored images of the sun taken at specific wavelengths of the visible and UV spectrum. The colors are chosen mostly to enhance the details that are exposed at a certain wavelength.
Here's a webpage that has all of the wavelength images from the new SDO (Solar Dynamics Observatory) satellite (although right now, it looks like they are calibrating and the images are all messed up).