Sunday, 8 October 2017

CaK Full Disk - 8th October

It's been 7 weeks, not counting the eclipse, since i've been able to observe the sun.  Sunday dawned with some gaps in the clouds that were floating about, the sun is much lower in the sky, so waiting for it to clear the buildings I set up and went out to observe.  I knew that with so many surrounding clouds the seeing was going to be less than ideal, and indeed this was the case, so decided on the 40mm scope with the homebrew CaK filter to get an overview of the disk.  I knew it was going to be pretty blank with only a few regions of plage from relic active regions, but, where the large grouping on the western limb has passed over it was possible to see some towering clouds of plasma high above the active regions.  Click on the image for the full size view to get more detail.