First attempt at narrowband imaging of the Sun.
The scope is fitted with a narrow band filter which only allows light from Calcium K emission (singly ionised Calcium) in the Sun to come through (@ 393nm).
This band highlights activity in the Sun’s chromosphere up to 2000km above the Sun’s “surface” ie above the photosphere that is viewed in white light.
Large sunspots can be seen as well as plages. These bright areas (named after white French beaches) are thought to reflect magnetic field activity above sunspots and sometimes appear much more extensive than the sunspots themselves.
Lunt LS60T CaK B1200 scope with DMK 41AU monochrome CCD camera mounted on Ioptron ZEQ25GT. 1700UT.
AR 2121 produced a C2 flare on the 24th July 2014.
AR 2121 produced a C2 flare on the 25th July 2014.
AR2123 produced a C1 flare on the 26th July 2014.