Monday, 28 September 2020

AR12773 in Ha - 27th September

Taken with the same setup as the full disk, but without the Baader solar telecompressor and using the IMX174 camera for better sampling.  This little active regions looks nice, but magnetic field strength must be less than 1500 gauss as there are no sunspots formed.

Ha Full Disk 27th September

Another month has passed before I was able to take a look at the sun, too many things going on!  However there was a spotless active region visible so I was keen to make the most of the autumn sunshine.  Taken with the Lunt 50 etalon double stacked with the Daystar Quark and running at ~f22.

Tuesday, 1 September 2020

Cycle 25 Plage and Filaments - 30th August

Cycle 25 is certainly starting to get underway on our star.  While the magnetic fields may not be strong enough to form sunspots in this image, the are signs of turbulence in the form of both brighter page and also the darker patches of filaments - cooler clouds of plasma held aloft by magnetic fields.  This image was taken with the Coronado SM90 double stacked with a Daystar Quark and Airylab 2.8x telecentric and a PGR Grasshopper 3 camera with IMX174 chip.