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MSFC NSSTC Science@NASA Space Weather Plasmasphere

Ultraviolet Imager (UVI)



--- 1996 Calendar---

----------------------------------------------------
Data Quality Summary 1996
03/27 - 08/07 Data Available/Good Quality
08/08 - 09/24 Data Available/Bad or Questionable Quality
09/25 - 12/02 Data Unavailable
12/03 - 12/31 Data Available/Good Quality
----------------------------------------------------

02/24/96 055 POLAR Launch
02/26/96 057 Initial UVI Turnon

03/21/96 081 First Light
03/23/96 083 Opened door for first time
03/27/96 087 SC special constellation event (first dsp pointing)

04/13/96 104 Support for VIS special orbit
04/14/96 105 Star viewing / Closed door for flip
04/16/96 107 SC flip maneuver
04/17/96 108 SC flip maneuver
04/19/96 110 Opened door after flip
04/25/96 116 Star viewing

05/07/96 128 Star viewing in eclipse passage
05/10/96 131 Star viewing in eclipse passage
05/22/96 143 Star viewing, door closed for calibration
05/24/96 145 Door opened
05/27/96 148 Door closed for PSI activities
05/28/96 149 Star viewing
05/29/96 150 POLAR passes into solar wind (?) 04:00 - 07:00 UT
05/31/96 152 Star viewing

06/05/96 157 Star viewing

07/30/96 212 Operations anomaly in primary HVPS
07/30/96 212 HVPS unstable 07/30 22:00 - 07/31 09:00
07/31/96 213 HVPS unstable 07/31 20:00 - 08/01 00:00

08/01/96 214 HVPS unstable for Gain > 13 08/01 00:00 - 08/02 02:00
08/02/96 215 HVPS unstable 08/02 02:00 - 08/02 11:00
08/03/96 216 HVPS unstable 08/03 06:00 - 08/03 07:00
08/03/96 216 HVPS unstable 08/03 13:00 - 08/03 16:00
08/03/96 216 HVPS unstable 08/03 17:00 - 08/04 04:00
08/04/96 217 HVPS unstable for Gain > 13 08/04 17:00 - 08/06 02:30
08/06/96 219 HVPS unstable 08/06 02:30 - 08/06 05:00
08/06/96 219 HVPS unstable for Gain > 13 08/06 05:00 - 08/08 07:00
08/07/96 220 Star viewing
08/08/96 221 HVPS unstable 08/08 07:00 - 08/09 09:00
08/09/96 222 HVPS unstable 08/09 17:00 - 08/10 00:00
08/10/96 222 Nominal operations halted. Instrument on standby.
08/16/96 229 Nominal operations resume with Gain fixed at 13.
08/25/96 238 HVPS unstable 08/25 06:30 - 08/25 07:30
08/25/96 238 HVPS unstable 08/25 20:30 - 08/25 22:30
08/25/96 238 HVPS unstable 08/25 20:30 - 08/25 22:30
08/25/96 238 HVPS unstable 08/25 23:30 - 08/28 00:00
08/28/96 241 HVPS monotonically decreased 08/28 - 09/30

09/25/96 269 Flight software updated
09/30/96 274 Door opened. Nominal operations halted.

10/02/96 276 Primary HVPS troubleshooting
10/07/96 281 Primary HVPS troubleshooting
10/14/96 288 Closed door for flip
10/14/96 288 Primary system off/Primary HVPS troubleshooting
10/15/96 289 Primary system power cycled on-off/Primary HVPS troubleshooting
10/15/96 289 Primary system off
10/17/96 290 SC flip maneuver
10/21/96 295 Primary system on/Primary HVPS troubleshooting
10/22/96 296 Star viewing
10/22/96 296 Primary system off/Primary HVPS troubleshooting

11/06/96 311 Primary system on/Primary HVPS troubleshooting
11/21/96 326 Flight software updated
11/25/96 330 Primary system off/Secondary system on/Begin Secondary system checkout

12/03/96 338 Secondary system operational. Nominal operations resumed.
12/03/96 338 Door opened
12/23/96 358 Star viewing


--- 1997 Calendar ---

01/10/97 010 Magnetic cloud event (through 1/11)
01/27/97 027 Star viewing

03/16/97 075 Door closed for PSI activities
03/30/97 089 Begin Comet Hale-Bopp observations
03/31/97 090 Door opened
03/31/97 090 (late March) Eclipse season begins

04/02/97 092 End Comet Hale-Bopp observations
04/11/97 101 Door closed for SC flip. HVPS disabled
04/12/97 102 SC flip maneuver
04/13/97 103 SC flip maneuver
04/15/97 105 HVPS enabled
04/22/97 112 Door opened
04/26/97 116 Star viewing

05/13/97 133 Door closed for PSI operations
05/15/97 135 Door opened
05/15/97 135 (mid May) Eclipse season ends
05/22/97 142 Door closed for PSI operations
05/22/97 142 Star pointing GAP... 08/12/97 224 Door closed for PSI operations
08/27/97 239 Star pointing
08/28/97 240 Door opened

09/22/97 265 Begin UVI/VIS special ops on dayside
09/26/97 269 End UVI/VIS special ops

10/01/97 274 Upload new flight software
10/01/97 274 Star pointing
10/11/97 284 Close door for SC flip
10/13/97 286 SC flip maneuver
10/14/97 287 SC flip maneuver
10/17/97 290 Open door after SC flip

11/04/97 308 Close door for PSI operations
11/19/97 323 Open door?

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NASA Logo Image Curators: Mitzi Adams
Author: Dennis Gallagher
NASA Official: Dr. Renee Weber
Last Updated: June 18, 2014