SUMER study #756: Doppler shifts in coronal hole (II)

• date, time: 22.Sep.96, 00:40 - 08:11 UT
• field of view: 476 arcsec E - 66 arcsec W, 262 arcsec - 562 arcsec N
• slit: 1.0 arcsec x 300 arcsec (number 2)
• raster step size: 3.01 arcsec (8 elementary steps)
• exposure time: 150 seconds
• telemetry: 181 images of 512 spectral x 360 spatial pixels (format 38)
• compression: quasilog-min-max (method 5)
• wavelength: 1541.50 Å on reference pixel 531 of Detector A
• rotation compensation: standard
• binning: no spectral, no spatial
• on-board flat field correction: no

Details have been published by:

• Hassler DM, Dammasch IE, Lemaire P, Brekke P, Curdt W, Mason HE, Vial JC, Wilhelm K: Solar wind outflow and the chromospheric magnetic network. 1999, Science 283, 810 - 813
• Dammasch IE, Wilhelm K, Curdt W, Hassler DM: The Ne VIII (lambda770) resonance line: Solar wavelengths determined by SUMER on SOHO. 1999, A & A, 346, 285 - 294
• Dammasch IE, Hassler DM, Curdt W, Wilhelm K: Statistical analysis of EUV and UV lines inside and outside of solar coronal holes. 1999, Space Sci. Rev., 87, 161 - 164
• Wilhelm K, Dammasch IE, Marsch E, Hassler DM: On the source regions of the fast solar wind in polar coronal holes. 2000, A & A, 353, 749 - 756

Spectral window

Detailed spectral windows

Cont. at 1543.1 (< 10 000 K)

Si II 1533.4 (14 000 K)

C IV 1548.2 (100 000 K)

Ne VIII 770.4 (630 000 K)

IED, 19.Jan.99