Calcium II K images - 2021
Ca K Barr filter : 393.25 nm, FWHM = 0.26 nm, 2-cavity filter
Ca K Alluxa filter : 0.40 FWHM, 3-cavity filter
Takahashi TOA 150 mm with 65 mm aperture stop
ASI 1600 camera
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10 June April 2021 Barr + Alluxa filters |
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25
March 2021 |
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