Sunday 14 April 2024

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 FD 40mm f15 zwo183mm

Saturday 13 April 2024

CaK Sun 7th April

Less than ideal conditions but I mamanged a quick grab of the sun in between the clouds! CaK FD 40mm f15 zwo183mm

Sunday 7 April 2024

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. CaK FD 40mm f15 zwo183mm undesignated spot CaK 66mm f15 2x cemax zwo290mm ar13630 CaK 66mm f15 2x cemax zwo290mm ar13629 CaK 66mm f15 2x cemax zwo290mm AR13628 CaK 66mm f15 2x cemax zwo290mm

Sun 23rd March

CaK FD 40mm f15 zwo183mm CaK FD Proms 40mm f15 zwo183mm

Sun 17th March

CaK FD 40mm f15 zwo183mm AR13614 CaK 66mm f15 2x cemax zwo290mm

Sun 16th March

CaK FD 40mm f15 zwo183mm Emerging Active Jet 80mm f15 2x cemax zwo290mm random plage CaK 80mm f15 2x cemax zwo290mm ar13611 CaK 80mm f15 2x cemax zwo290mm