SXT Toban Report for week 19 : May 5 - May 10, 1992 G. Kawai and S. Koide 1. Error A bitmap error was found at the 2nd pass on May 8 and recovered at once. 2. Table upload May 5 Pass 3 May 6 Pass 5 dark frame calibration May 7 Pass 2 include 15sec exposure in FFI May 8 Pass 2 short,medium,long exposures for Al.1 and AlMg change to ARS1 (for off-pointing experiment) Pass 5 return to ARS2 May 9 Pass 3 optical calibration May 10 Pass 2 from op. cal. mode to normal mode 3. Observing Region NOAA7154 was selected althrough the week, except May-8 01:35 to 02:07 (Just after table change at May8 Pass2. A region at the east limb was selected at the time, and NOAA7154 was selected again next spacecraft morning) 4. Flare flare mode (See SSOC report for detaile) May 5 ~11:40~ not reformatted yet ~20:30~ not reformatted yet May 7 ~10:40~ not reformatted yet May 8 ~15:50 - 16:20~ NOAA7154 5. Off-pointing experiment May 8 Pass 2-3 point to 2'N 18'W 3-4 point to 2'N 2'W 4-5 point to 2'N 14'E Beautiful images of extended corona were obtained.