ROSAT S/C Status 1990-06-01 ... 1995-10-01

Under Construction!

Compiled by Jakob Englhauser
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Contents

   900601 Launch of ROSAT
   900924 STC2 lost
   910106 S-gyro enabled
   910207 Black List' of lost ROSAT AO-1 Observations (910207-911108)
   910126 Permanent Change to AMCD CPU 2
   910511 Y-gyro lost; X-gyro enabled again
   910929 Magnetometer switched on permanently
   9301-- Occasional hang-ups of STC1
   931116 Z-gyro lost (permanently switched off)

1990-09-24 (?)
"STC2 lost"
Reference: GSOC / ROSAT Summary Report
1991-01-06 (?)
"S-gyro enabled"
Description: s-gyro: enabled on ROSAT day 223; irregularities in motor current. Reference: GSOC / ROSAT Summary Report
1991-01-26 (?)
"Permanent Change to AMCD CPU 2"
Description: Changed to AMCD CPU2 on ROSAT day 242 Reference: GSOC / ROSAT Summary Report
1991-05-11 (?)
"Y-gyro lost; X-gyro enabled again"
Description: y-gyro: sudden increase of motor current to 88 mA on ROSAT day 350; permanently switched off. x-gyro: enabled again simultaneously to switch-off of y-gyro. Still very high drift rates (up to +- 3 arcsec/s). Reference: GSOC / ROSAT Summary Report
1991-09-29 (?)
"Magnetometer switched on permanently"
Description: Magnetometer switched on permanently since ROSAT day 493 with new software. Reference: GSOC / ROSAT Summary Report
1993-01-.. (?)
"Occasional hang-ups of STC1"
Reference: GSOC / ROSAT Summary Report
1993-11-16 (?)
"Z-gyro lost (permanently switched off)"
Description: z-gyro: switched off on ROSAT day 1284, after stop of delivering useful measurement data Reference: GSOC / ROSAT Summary Report

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