CaK Sun 13th April

Fishing for gaps in the cloud again and just enough time for a full disk, although high cloud and haze meant the proms were not revealing themselves. More tweaking of the filter setup is showing hints of the filaments though which is positive.

CaK Sun 7th April

Less than ideal conditions but I mamanged a quick grab of the sun in between the clouds!

Calcium Sunshine 6th April

Finally a bit of time, and despite storm Kathleen bringing gales and skies filled with Saharan dust an opportunity to observe. Trying out the custom Cak filter here, an Alluxa 0.14nm double stacked with a CaK PST filter, seems to offer an improvement in terms of a narrower bandpass with more contrast. Hopefully better conditions soon will allow further testing.

Sun 23rd March

Sun 17th March

Sun 16th March

Sun 9th March

A new filter tilter now allows further fine tuning of the CaK system... Just need some decent spells of sunshine to be able to experiment with this a bit more, the setup has promise!

Sun 3rd March

Sundays Trio of Disks 25th February

Calcium Saturday 24th February

The weather forecast for saturday had steadily got better as last week went on, but the weather man in me was actually slightly more optimistic for something better still. Turns out I was right, I woke to a clear, frosty and icey morning with nice blue skies. Seeing was forecast to be about 1.2" first thing, slowly worsening to 1.6" by afternoon. I'd already decided with the good transparency the day offered that I was going to image in CaK, and with the seeing looking like what was predicted I decided 80mm was the aperture I was working at for the closeups.