Double stacking a scope reduces continuum leakage and so enhances the contrast of features, which for looking for the ghosts of cycle 25 is a bonus. So the obvious thing to do was to use the Daystar Quark with the SM90, using 2x2 binning got the effective pixel size up to a whopping 7.3um which works better for the f38 i'm now running the system at (certainly compared to the 3.69um native pixel size of this GH camera).
First image the filament and relic plage that is mid disk, these are cycle 24:
Then to S6205, the little ephemeral bright point associated with cycle 25 in the southern hemisphere.
Was pleased to wake up this morning to blue skies, so got out of bed nice and early to get some viewing in before work. Seeing wasn't great so lots of sub frames and lots of runs were key to picking out a best image. First up the full disk with the SM90 and GH3 ICX916M - again lots of people online saying the sun is blank, absolutely not! Mid disk a filament divides opposing magnetic polarities of the turbulent plage of the active regions that were with us in April. In northern polar regions we see the hints of a near limb to limb polar crown which marks the position of start of cycle 25 jetstream. Then, in the southern hemisphere S6205 is a cycle 25 feature.
The very small ephemeral region just left of centre marks another cycle 25 feature. Taken with the SM90, GH3 IMX174 and a 3x barlow to get a better image scale for the pixels on the chip.
Another sure sign of the starting of a new solar cycle is the appearance of polar filaments. These clouds of plasma mark the magnetic boundaries of solar jet streams/ Taken with the SM90, 3x barlow and GH3 IMX174 camera.
Only small, this little ephemeral region is sat on the solar equator and is cycle 24. Taken with the SM90, 3xbarlow, FLIR GH3 ICX916M camera.
Taken with the GH3 IMX174 camera and the Coronado SM90 with the 3x barlow, this closeup in single stack mode shows turbulent zone of plasma associated with the active regions that were visible back in April.
A full disk from Saturday morning, as usual of late at a first glance seems to be not much happening. A small dark filament in northern polar regions marks cycle 25 bands that are starting to surface, and on the solar equator a ephemeral bright point is the tail end of cycle 24. Taken with the SM90 scope at prime focus and the FLIR GH3 ICX916M camera.
