OIII-MgIX

OIII (Log Tmax = 5.0 K) and Mg IX (Log Tmax = 6.0 K)

Good temperature coverage
Mg IX very weak in coronal holes
Possible multilayers: Greater than 500 Å, see Multilayer issues

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Multilayer issues

Line Constraints

Wavelength Options

Dual Lines:

Si XI - He II
Ne VII - Ca IX
Si XI - He I
O IV - Mg X
Mg X - O V
O III - Mg IX

Single Lines:

C VI
Fe IX
Fe X
Fe XIII
Mg IX
Si XII