1. UVIS TEAM MEETING OPERATIONS UPDATE
06/27/11
UVIS TEAM MEETING OPERATIONS UPDATE

2. UVIS TEAM MEETING OPERATIONS UPDATE
Instrument Status
On/Off Cycle: 28.
None since last meeting.
Hours On: ~94,500 hours.
Longest continuous operations: 9/11/2007 – 11/1/2010.
HDAC Filament Modulation:
Filament 1: hours (H cell), (D cell).
Filament 2: hours both H cell and D cell
Last: In S68 during T77 (H cell and D cell).
Next: In S70 during T78 (H cell and D cell).
06/27/11
UVIS TEAM MEETING OPERATIONS UPDATE

3. Significant Data Issues
UVIS_145SA_COMPSIT006_CIRS
Data return: 56% - DSS14 problem
S67
UVIS_146SA_EUVFUV003_PRIME
Data return: 72% - Station problem
S68
No significant data issue except for some IPHSURVEY
As of last week
06/27/11
UVIS TEAM MEETING OPERATIONS UPDATE

4. UVIS TEAM MEETING OPERATIONS UPDATE
First Time Events
No First Time Event
Upcoming: The XXM opmode starting S71.
UVIS opmode are now
OFF
SLEEP (6.6 W)
DOWNLINK (new, 7.1 W)
NO_HDAC (new, 9.4 W)
ON (14.6 W)
06/27/11
UVIS TEAM MEETING OPERATIONS UPDATE

5. UVIS TEAM MEETING OPERATIONS UPDATE
Rbot: Workload Impact
The impact of Rbot on the ops team workload is highly variable:
S68: 0 out of 10 designs
S69: 1 out of 14 designs
S70: 0 out of 19 designs
S71: Don’t know yet.
The up-front job done by SP and the lowering of the keep-out values (to +/- 300 rpm starting S67) helps a lot.
06/27/11
UVIS TEAM MEETING OPERATIONS UPDATE

6. UVIS TEAM MEETING OPERATIONS UPDATE
Major Local Issues
Uplink side: None
Downlink side:
Problem processing large files generated by long (32 hours) system scans.
We have a workaround
06/27/11
UVIS TEAM MEETING OPERATIONS UPDATE

7. XM Data Utilization Summary S64
06/27/11
UVIS TEAM MEETING OPERATIONS UPDATE

8. XM Data Utilization Summary S65
06/27/11
UVIS TEAM MEETING OPERATIONS UPDATE

9. Action Items from Last Meeting
06/27/11
UVIS TEAM MEETING OPERATIONS UPDATE

10. UVIS TEAM MEETING OPERATIONS UPDATE
Action Item #1: E15 Setup
06/27/11
UVIS TEAM MEETING OPERATIONS UPDATE

11. UVIS TEAM MEETING OPERATIONS UPDATE
Action Item #1: E15 Setup
We have the same geometry in s69 doy 213 (Rhea occultation)
First taking one full detector image
Then taking data with best guess 2 6-pixels window around the stars
Data should on the ground doy 214 late or doy 217 early am.
S70 IEBs are due doy 217 – Gives us an opportunity to tweak the setup.
06/27/11
UVIS TEAM MEETING OPERATIONS UPDATE

12. Action Item #2: Spectral Resolution in Aurora Scan
Issue: The spectral binning is 32 when we scan for UVIS (rate is 0.06 mllrd/s. Integration time is 8 sec. Wayne wants no spatial binning)
If the Z axis is perpendicular to the equator (scan W-E) we generally can limit the spatial window to cover the +/- 55 deg lat to limb region.
06/27/11
UVIS TEAM MEETING OPERATIONS UPDATE

13. Action Item #2: Spectral Resolution in Aurora Scan
If the Z axis is parallel to the equator (scan N-S) it is generally not possible to reduce the spatial window size unless we design the pointing with multiple overlapping scans.
More complex design
Issue with scan duration
We have not try that yet.
06/27/11
UVIS TEAM MEETING OPERATIONS UPDATE

14. Action Item #3: HSP maintenance
At Bill’s request we are now turning on the HSP HVPS for 24 hours every 3 months or so (if dark sky pointing available)
S67 – doy 113
S68 - doy 182
S69 - doy 240
S70 - scheduled for doy 318
06/27/11
UVIS TEAM MEETING OPERATIONS UPDATE

15. UVIS TEAM MEETING OPERATIONS UPDATE
Notes and Reminders
Use UVIS_SOLAR_OFF to Sun in CIMS for all solar occultation instead of ISS_NAC to Sun (-20.0, 0.0, deg) offset.
Before requesting sponge bits let us know what you want as we may have a good understanding of instrument SSR loading.
The list of ring occultations that contain an atmospheric occultation is on the team web site at
The list of all the tour calibrations is on the team web site at
The UVIS PEFs are on the team web site at
06/27/11
UVIS TEAM MEETING OPERATIONS UPDATE