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Table 2.
CHROMIS filters.
Wide-band filters |
Narrow-band prefilters |
|||||||
---|---|---|---|---|---|---|---|---|
Wavelength band | CWL [nm] | FWHM [nm] | Tpeak | Wavelength band | CWL [nm] | FWHM [nm] | Tpeak | |
Ca II K blue | 392.52 | 0.41 | 0.86 | |||||
Ca II H&K WB | 395 | 1.32 | 0.9 | Ca II K core | 393.41 | 0.41 | 0.8 | |
Ca II H red limb WB | 396.96 | 0.18 | 0.74 | Ca II H core | 396.88 | 0.41 | 0.8 | |
Ca II H core limb WB | 396.90 | 0.18 | 0.71 | Ca II H red | 397.74 | 0.41 | 0.83 | |
Ca II continuum | 399.04 | 0.42 | 0.76 | |||||
H-β WB | 484.55 | 0.65 | 0.9 | H-β NB | 486.22 | 0.48 | 0.92 |
Notes. CWL = center wavelength at normal incidence, Tpeak = peak transmission as given by the manufacturer. See also the measured transmission profiles in Fig. 4. The curly brackets indicate that any of the Ca II WB filters can be combined with any subset of the Ca II NB prefilters.
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