SUMER study #687: Disk center scans in O IV

Remark: The field of view was scanned twice, before and after studying the monochromatic line ration O IV (1399/1401) for one hour.


Spectral window

O IV
Average detector image, average profile.


O IV 1401.16 (174 000 K)


Continuum intensity, line intensity, line shift.


IED, 13.Feb.03