Trying something new here, the CaK filter receives a f28 beam, while the chip receives a f40 beam following the use of a 2x barlow nosepeice on the camera. I'm not convinced with this shot, other than a hotspot of brightness the quality reading of the image is much lower than I am used to getting. The image looks soft too. Could be the seeing wasn't up to it or more likely the barlow is introducing spherical aberration. I will persevere with this but my gut instinct is that I much prefer images taken at f28.
The sun is still quiet apart from the activity in the cycle 25 northern solar jetstream. Taken with the usual double stacked 50mm travelling scope.
The seeing was being kind and allowed me to get a closeup of the plage region using the 100mm Tal refractor at f28 (using the Airylab 2.79x telecentric. I'm pleased with the level of detail here. Next time conditions allow i'm going try the above setup but with a 1.4x barlow after the filter stack to see if I can get close to f40 to see if this improves detail.
Taken by double stacking the Coronado SM90ii with the Daystar Quark using the Airylab 2.79 x telecentric cuts the contrast and reveals the subtleties of the cycle 25 jetstream that is currently active on our star.
The northern Jet stream of cycle 25 was certainly showing signs of activity, with an area of plage, filaments and bright points. Taken with the 50mm Lunt etalon double stacked with a Daystar Quark.
Using the 100mm Tal refractor, 2.79x telecentric and the Daystar Quark was a little more cooperative with the seeing conditions on Bank Holiday Monday, revealing better detail in the prom than with the larger scope.
It was soft and squishy, but just about passed with the seeing! Taken with the 8" Airylab HaT and a Daystar Quark.
