MDI FLIGHT MISSION HIGHLIGHTS MDM/TDT/CNF, 2 Apr 1997 EBZ Feb 1998 EBZ June 1998 EBZ Nov 1998 EBZ Nov 1999 EBZ Jan 2000 2 Dec 95 SC - SOHO Launch 3 Dec 95 SC - Thermal Reconfiguration 3 Dec 95 MDI - MDI turned on 4 Dec 95 SC - ESR 5 Dec 95 MDI - Oven Heater turned on 10 Dec 95 MDI - Image Processor, CCD, and mechanisms turned on 10 Dec 95 MDI - First high rata telemetry data 14 Dec 95 SC - Momentum Management 19 Dec 95 OBS- Door opened, first images 20 Dec 95 OBS- First leg alignment & Velocity observations 21 Dec 95 MDI/OBS- Tuning Change 3 Jan 96 SC - Door closed for SOHO Orbit Shaping Maneuver 9 Jan 96 SC OBS- Door opened during focus test 10 Jan 96 MDI - CCD decontamination heater turned off 16 Jan 96 SC - Momentum Management 22 Jan 96 OBS- Update to IP Structure Program 25 Jan 96 OBS- First Science Day: 23 hour continuous observations 29 Jan-12 Feb Corrupted HK Data (4 times in this period) 27 Jan 96 OBS- First high resolution science observations 3 Feb 96 OBS- Offset pointing to limbs 4 Feb 96 OBS- First correlation tracking observations 5 Feb 96 MDI/OBS- Flat field calibration using the legs 8 Feb 96 SC/MDI - Coordinated Payload Jitter Test 9-13 Feb 96 SC OBS- Payload Thermal Control System Test 13 Feb 96 SC/MDI - Door closed for Halo Orbit Injection 15 Feb 96 SC OBS- Door opened during focus test 20 Feb 96 MDI/OBS- Oven transient test 23 Feb 96 OBS- Emerging Active Region observations (12 hrs.) 26 Feb 96 MDI/OBS- Oven impulse response test 7 Mar 96 JOP/OBS- South Pole Joint Observing Program (JOP 39) 13 Mar 96 OBS- Update to IP Structure Program 14 Mar 96 OBS- Coordinated Observing with Sac. Peak (attempted) 18 Mar 96 SC - Momentum Management 19 Mar 96 SC/MDI/OBS- Spacecraft Roll Test 21 Mar 96 SC/MDI - Reaction Wheel Test 23 Mar 96 OBS- High Cadence Active Region observations 27 Mar 96 OBS- Begin 80-hour continuous Dynamics Program 1 Apr 96 SOHO - First Month of SOHO Science begins (?) 2 Apr 96 SC/MDI - Jitter Test 2 Apr 96 MDI - Framelist Reload - Tuning change 3- 4 Apr 96 SC OBS- Spacecraft Offset Pointing Test 6 Apr 96 OBS- Update to IP Structure Program 6- 8 Apr 96 OBS- Running CAL mode structure 11 Apr 96 MDI/OBS- Tuning Change 6-15 Apr 96 OBS- Yohkoh/NSO/SOHO Bright Point Campaign 11 Apr 96 OBS- Update to IP Structure Program 12 Apr 96 MDI - Start uplink of flat field 15 Apr 96 SC/MDI - End of spacecraft commissioning (?) 16 Apr 96 SC/MDI - Repoint spacecraft 3.3 arcmin North, to center EIT 16,17 Apr 96 SC/MDI/OBS- Jitter Test 17 Apr 96 MDI - Leg Adjustment 17 Apr 96 OBS- Begin continuous Structure Program 19 Apr 96 OBS- Update to IP Structure Program 21 Apr 96 MDI OBS- Dep Crash 23 Apr 96 MDI - Framelist Reload - Tuning change 24 Apr 96 OBS- Begin 80-hour continuous Dynamics Program 30 Apr 96 OBS- Update to IP Structure Program 2 May 96 SOHO - First SOHO press conferences 3 May 96 MDI - Finish uplink of flat field 7 May 96 MDI - Flat field lost 15 May 96 OBS- Update to IP Structure Program 17 May 96 SC/MDI - Momentum Management, Jitter Test 18 May 96 MDI - Framelist Reload - Tuning change 18 May 96 MDI - Flat field reload finished 19 May 96 OBS- Update to IP Structure Program 21 May 96 SC - S/C 90 degree roll 22 May 96 SC/MDI - S/C momentum management/MDI jitter 23 May 96 MDI - Recenter Image 23 May 96 MDI - Start of continuous contact 26 May SC - S/C 10" offpoint anomaly 22 Jun 96 SC/MDI - Momentum Management, Jitter Test 24 Jul 96 SC/MDI/OBS- End of 2 continuous dynamics observation 25 Jul 96 MDI - Framelist Reload - Tuning change 25 Jul 96 OBS- Update to IP Structure Program 12 Aug 96 OBS- Update to IP Structure Program 18-24 Aug 96 SC/MDI/OBS- 3 day continous contact 11 Sep 96 SC/MDI - Momentum Management, SK/Orbit Trim maneuver/Jitter 17-21 Sep 96 SC/MDI/OBS- 3 day continous contact 17 Oct 96 SC/MDI/OBS- 3 day continuous contact 8 Nov 96 MDI - Leg Flat Field 9 Nov 96 SC - Momentum Management 12-22 Nov 96 MDI/OBS- Flat field corrupted 16-19 Nov 96 SC/MDI/OBS- 3 day continous contact 21 Nov 96 SC/MDI - Roll Maneuver/Momentum Management/Station Keeping /Jitter 15-20 Dec 96 SC/MDI/OBS- 3 day continous contact 14 Jan 96 SC/MDI - Momentum Management/Jitter 15-18 Jan 97 SC/MDI/OBS- 3 day continous contact 15 Feb 97 SC/MDI/OBS- CEPAC caused RTU/Structure corrupted for ~5 hours 13-17 Feb 97 SC/MDI/OBS- 3 day continous contact 12-16 Mar 97 SC/MDI/OBS- 3 day continous contact 18 Mar 97 SC/MDI - Wheel 4 maintenance, momentum management/Jitter 18 Mar 97 /MDI/OBS- Framelist Reload - Tuning Change 20 Mar 97 SC/MDI - 360 deg. S/C roll/Jitter 27 Mar 97 MDI - Leg Flat Field 28 Mar 97 MDI - Pointing Adjustment 11 Apr 97 SC/MDI - Momentum Management/Jitter 13 Apr 97 MDI - 3 month continuous contact 23 Apr 97 SC - Receiver 1 lost lock 7 Jul 97 MDI - Framelist Reload 24 Jul 97 MDI - Center Adjustment 5 Aug 97 MDI - Framelist Reload - Tuning change 10 Aug 97 MDI - 3 day continuous contact 1-4 Sep 97 SC/MDI - Momentum Management/roll/wheel maint./mom mtg/sk/Jitter 11 Sep 97 MDI - 3 day continuous contact 7 Oct 97 MDI - 3 day continuous contact 17 Oct 97 MDI - Adjust Image Center 3 Nov 97 MDI - Framelist Reload - Focus change 5 Nov 97 MDI - 3 day continuous contact 19 Nov 97 SC - ESR 20 Nov 97 MDI - Leg Alignment 29 Nov 97 SC/MDI - Momentum Management 11 Dec 97 MDI - 3 day continuous contact 19 Dec 97 SC/MDI - Momentum Management 6 Jan 98 MDI - Framelist Reload - Tuning change 9 Jan 98 MDI - 3 month continuous contact 3 Mar 98 SC - COBS warm reboot, 2 ESR's 4 Mar 98 SC - 3 Momentum managements, move 3.3 arcmin North 17 Apr 98 SC - Station Keeping 24 Jun 98 SC - Momentum Management, Jitter Test, 1 ESR 25 Jun 98 SC - 2 ESR's, lost contact with SoHO 23 Jul 98 SC - SoHO located with radar from Arecibo-Goldstone 4 Aug 98 SC - Communication with SoHO - carrier spikes seen 8 Aug 98 SC - SoHO telemetry restored 10 Aug 98 SC - First temperatures were taken of PLM 12 Aug 98 SC - Hydrazine tank began its thawing 25 Aug 98 SC - Hydrazine tank thawed 16 Sep 98 SC - At 18:30 UT SoHO was sun-pointed 25 Sep 98 SC - SoHO is back in normal mode 12 Oct 98 MDI - MDI was switched on at 19:39 and DEP & IP worked 19 Oct 98 MDI - MDI filter oven was turned on and dopps gotten 21 Oct 98 MDI - Jitter test 29 Oct 98 MDI - Flat field upload finished 12 Nov 98 MDI - Jitter test 13 Nov 98 SC - Momentum Mgt & SK 15 Nov 98 SC/MDI - S/C roll for Leonids, MDI close door 20 Nov 98 MDI - Open door and recovery from Leonids 23 Nov 98 MDI - Align legs 28 Nov 98 MDI - 7 day Continuous Contact 21 Dec 98 SC - ESR Mode due to gyro failure 2&3 Feb 99 MDI - Recovery from ESR mode (no alignment needed) 14 Feb 99 SC - SEU caused ESR 18 Feb 99 MDI - MDI ESR recovery complete (no alignment needed) 3-8 Mar 99 SC - S/C Mom Mgt, Roll, SK 13 Mar 99 MDI - Continuous Contact until 14 June 17 Jun 99 SC - S/C Mom Mgt, SK 15 Jul 99 MDI - 5 day Continuous Contact 11 Aug 99 - Total Solar Eclipse 26 Aug 99 MDI - 7 day Continuous Contact 9 Sep 99 MDI - 19 day Quasi-Continuous Contact 28 Sep 99 SC - Gyroless Activities until Oct 4 13 Oct 99 MDI - 7 day Continuous Contact 9 Nov 99 SC - 8 day Continuous Contact 9 Nov 99 MDI - Momentum Mgt for Leonids 16 Nov 99 SC - Roll for Leonids 19 Nov 99 SC - Roll back after Leonids 19-20 Nov 99 SC - Momentum Mgt after Leonids 28 Nov 99 SC - ESR 30 Nov 99 SC - Momentum Mgt for recovery and roll back 1 Dec 99 SC - Momentum Mgt for recovery then ESR 8-9 Dec 99 SC - Momentum Mgt and roll back 8 Dec 99 MDI - 6 day Continous Contact 7 Jan 00 SC - ESR 10-11 Jan 00 SC - Momentum Mgt 13 Jan 00 MDI - 8 day Continuous Contact KEY: SC - spacecraft events or tests MDI - MDI instrument calibration or activity (not general science observing) OBS - MDI observing sequence JOP - Joint observing program SOHO - SOHO team event (not spacecraft)