Calcium II K images - 2024
Ca K Barr filter : 393.25 nm, FWHM = 0.26 nm, 2-cavity
filter
Ca K Alluxa filter : 0.37 nm FWHM 3-cavity filter, and 0.14 nm FWHM single-cavity filter
Takahashi TOA 150 mm
with 65 mm or 75 mm aperture stop
7 March 2024
Altair 393-3 nm |
7 March 2024
Altair 430-2 nm |
7 March 2024
Continuum 540 nm |
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 23 Feb 2024 Ca K 0.37 nm |
 23 Feb 2024 Altair 393-3 nm |
 23 Feb 2024 Altair 393-3nm |
7 March 2024
Ca K 0.37 nm |
7 March 2024
Ca K 0.26 nm |
7 March 2024
Ca K 0.37 nm + 0.14 nm |