One of the ways to get more detail and contrast when imaging the sun is to use a double stacked filter, Thows the region of plage on the limb. Coronado SM90, Daystar Quark and the PGR Grasshoppr 3.
Very little to see on the full disk in Ha this weekend, just a small region of quiet plage departing the limb. Not even any proms to speak of! Taken with the Coronado SM90 with the PGR Grasshopper 3 ICX814 camera.
The better seeing on sunday meant this CaK disk turned out the way I was hoping for! Be sure to double click the image, it's a big one! Taken with the skywatcher ED80 stopped down to 60mm, the PGR Grasshopper 3 ICX814 camera, and the homebrew CaK filter.
The seeing was having it's better moments on Sunday, so decided to get a closeup on the region of departing plage using the 100mm refractor at f20+, using the PGR Chameleon running in 12bit mode. Quite surprised at how clean the image came out. Taken with the homebrew CaK filter.
Another view of the snaking filament as it approaches the solar limb. Taken with the SM90 and a Daystar Quark for double stacking.
The main feature of interest today was a dark filament emanating from a region of plage from a relic active region. This has been quite dynamic over the past couple of days and just before imaging this a large section lifted off as the magnetic fields binding it snapped. The image was taken with the SM90 double stacked with a daystar Quark and used the PGR GH3 ICX814 camera.
The seeing was not great for the SM90 today - the spicule ring was just a featureless ring rather than the dancing forest of pampas grass it can be when conditions are good. Still, despite the sun being devoid of the usual prominences there was a nice filament and region of plage approaching the limb. Taken at 800mm focal length with the Grasshopper 3 ICX818 camera.
