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Tentative line list (based on proposed use cases). Prominences 587.6 He I (D 3 ) 656.3 Hα 854.2 Ca II 1083.0 He I. Filaments 656.3 854.2 1083.0 1565.0 Fe I. Photosphere/Chromosphere 517.3 Mg I (b 2 ) 630.2 Fe I 854.2
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Tentative line list (based on proposed use cases) Prominences 587.6 He I (D3) 656.3 Hα 854.2 Ca II 1083.0 He I Filaments 656.3 854.2 1083.0 1565.0 Fe I Photosphere/Chromosphere 517.3 Mg I (b2) 630.2 Fe I 854.2 1083.0 1565.0 Photosphere 517.3 525.0 Fe I 630.2 1565.0 Other lines of interest (e.g., accessible with a versatile grating in a fixed-beam configuration) 393.3 Ca II (K) 589.0 Na I (D2) 396.8 Ca II (H) 589.6 Na I (D1) 460.7 Sr I 849.8 Ca II 486.1 Hβ 866.2 Ca II 518.4 Mg I (b1)874.1 Mn I 553.8 Mn I more lines, anyone?
z = incoming radiation = outgoing radiation n = grating normal = blaze angle ]z=+
ViSP potential gratings Prominence use case NSO2 308.57 52.0 -59.9 587.6 8 -24.0 0.068 961597 656.3 8 -10.8 0.537 868409 854.2 6 -14.1 0.962 902085 1083.0 5 -6.1 0.407 808715 ruling Custom 404.92 57.4 -66.6 587.6 7 -18.2 0.999 1443490 656.3 6 -24.0 0.646 1532428 854.2 5 -12.3 0.726 1318510 1083.0 4 -9.8 0.670 1254960 ma+beffK Filament use case 53-*-423E 175.56 32.0 -37.8 656.3 9 -12.8 0.912 310601 854.2 7 -12.0 0.996 312314 1083.0 6 -6.0 0.375 320480 1565.0 4 -8.8 0.895 317665 Custom 292.53 50.0 -56.6 656.3 8 -12.1 0.967 745091 854.2 6 -14.9 0.952 762262 1083.0 5 -8.1 0.765 713720 1565.0 3 -24.0 0.568 787278 Photosphere/Chromosphere use case 53-*-423E 175.56 32.0 -40.5Custom 251.84 59.0 -65.7 517.3 11 -20.0 0.287 333376 517.3 13 -14.2 0.954 1283565 630.2 10 -13.2 0.287 350491 630.2 11 -9.1 0.471 1170423 854.2 7 -16.8 1.000 342620 854.2 8 -11.6 0.940 1228894 1083.0 5 -22.9 0.346 322893 1083.0 6 -19.2 0.621 1371016 1565.0 4 -13.7 0.872 349626 1565.0 4 -24.0 0.469 1432163
A universal grating for a fixed beam? (work in progress) 153.0 line/mm, j =12.3, a+b = -15.5 Problem: low K →poor resolution
Polarimetry with ViSP Modulator:spinning “block” of 3 fixed retarders
Polarimetry with ViSP Modulator:spinning “block” of 3 fixed retarders
Polarimetry with ViSP Modulator:spinning “block” of 4 fixed retarders