Summary of LASCO/EIT Recommissioning Steps

Recommissioning began Tuesday October 13 at 1:00 PM EST (17:00 UT)

EIT images have been successfully taken in all four wavelengths.
C3 Coronal images have been taken and appear fine.
C2 Coronal images have been taken and appear fine.
Update - Wednesday October 15th: The C2 door has been opened and C2 coronal images have been taken. See latest images here (note: the C3 images have not had the f-corona/stray-light model subtracted because the spacecraft is rolled ~53 degrees. It will probably be rotated back on Friday to put solar north up.)

A more detailed status report is availaible as a separate file from the normal status reports.

This is a summary of the steps that will be followed during the recommissioning of the LASCO and EIT instruments. A check mark will appear when the steps are completed along with the date and time of completion. After Block 2, the blocks could be performed in a different order than what appears here.

Block 1
Boot all processors, turn on thermal control, check proper interprocess communications

• 13/17:00 UT Verify non-operational temperatures are within operational limits
• 13/17:33 UT TSTOL Procedure to power the LEB, inhibit automatic boot using NRT
• 13/17:49 UT Configure relays for normal operations on the A-side
• 13/17:49 UT Check out TCE HK monitors
• 13/17:56 UT Turn experiment power on
• 13/18:01 UT Boot instrument controller board
• 13/18:05 UT Check out ICE HK functions/mechanism status
• 13/18:05 UT Turn on LASCO/EIT zone heaters
• 13/18:31 UT Manually boot OBE (main processor)
• 13/18:35 UT Check out OBE operation
• 13/18:44 UT Turn PROM card power off
• Manually boot each camera and FP processor in succession, checking monitors
  • 13/18:57 UT - C1 - OK
  • 13/18:59 UT - C2 - OK
  • 13/18:02 UT - C3 - OK
  • 13/18:04 UT - EIT - OK
  • 13/18:13 UT - FP - running from RAM (still checking monitors)
• Take 0 and 60 second dark images from each camera (8 images)
  • 13/19:22 UT - C1 - 0 sec - OK
  • 13/19:33 UT - C2 - 0 sec - OK
  • 13/19:50 UT - C3 - 0 sec - OK
  • 13/19:56 UT - EIT - 0 sec - OK
  • 13/20:09 UT - EIT - 60 sec - OK
  • 13/20:26 UT - C3 - 60 sec - OK
  • 13/23:30 UT - C2 - 60 sec - OK
  • 13/23:40 UT - C1 - 60 sec - OK

Block 2
Check EIT mechanisms and camera, Image XUV Corona, Check C2/C3 mechanisms, camera

• 13/20:42 UT Check out EIT calibration lamp
• 13/20:44 UT Take an EIT calibration lamp image
• 13/20:55 UT Check out EIT shutter
• 13/20:58 UT !!! Take a solar EIT image in current filter/sector. 195A Image looks perfect!!
• 13/21:55 UT Checkout EIT camera
• 13/21:55 UT Check out EIT sector wheel
• 13/21:55 UT Take EIT solar images in each sector
• 13/23:00 UT Check out EIT CCD heaters
• 13/23:55 UT Check out C1, C2 and C3 cal lamps and shutters
• 14/00:45 UT Checkout C2 filter wheel, polarizer wheel
• 14/18:01 UT Check out EIT filter wheel
• 14/18:20 UT Checkout C3 filter wheel, polarizer wheel
• 14/18:38 UT Checkout C3 camera
• 15/14:00 UT Checkout C2 camera

Block 3
Open C3 Door, First Light Image of C3 Corona

• 14/18:35 UT - Cal Lamp check - OK
• 14/18:58 UT - Calibration Window Check - Orange/Clear - OK
• 14/19:12 UT - Adjust COB legs as necessary. Deleted: Not necessary
• 14/19:12 UT - Opened C3 Door
• 14/19:20 UT - Check COB Pointing
  • 14/19:17 UT - C3 H-alpha/Clear - OK
  • 14/19:20 UT - C3 Clear/Clear - OK
• Dark image checks: 0, 60, 300 seconds
• 15/22:18 UT - C3 0 Sec - OK
• 15/22:43 UT - C3 60 Sec - OK
• 15/23:29 UT - C3 300 Sec - OK

Block 4
Open C2 Door, First Light Image of C2 Corona

• Calibration Lamp Checks
• 15/19:30 UT - C2 Shutter Lamp Orange/clear - OK
• 15/19:45 UT - C2 Door Lamp Lens/clear - OK
• 15/19:45 UT - Verify Occulter Shadow Position - OK
• 15/19:51 UT - C2 Door Closed Orange/clear - OK
• 15/20:00 UT - Open C2 Door
• 15/20:15 UT - C2 alignment and pointing test using H-alpha filter
• 15/20:15 UT - C2 Door Open H-alpha/clear - OK
• Adjust COB legs if necessary SKIPPED
• Adjust IOCS if necessary SKIPPED
• 15/20:17 UT - C2 First Light Image Orange/Clear - OK
• Dark image checks: 0, 60, 300 seconds
• 15/22:11 UT - C2 0 Sec - OK
• 15/22:35 UT - C2 60 Sec - OK
• 15/23:02 UT - C2 300 Sec - OK

Block 5
Door Closed Calibration of C3

• 17-18 October - Cal lamp images of all filter and polarizer combinations (21 images)
• 18-19 October - Repeated
• 19-20 October - Repeated
• 17-18 October - Image calibration window through all filters and polarizer combinations (21 images)
• 18-19 October - Repeated
• 19-20 October - Repeated

Block 6
Door Closed Calibration of C2

• 17-18 October - Cal lamp images of all filter and polarizer combinations (13 images)
• 18-19 October - Repeated
• 19-20 October - Repeated
• 17-18 October - Image calibration window through all filters and polarizer combinations (10 images)
• 18-19 October - Repeated
• 19-20 October - Repeated
• Door Cal Lamp Image with Lens/Clear

Block 7
EIT Calibration

• 19-20 October - Full calibration of EIT telescope

Block 8
Check out C1 mechanisms, camera and Fabry-Perot

• Checkout C1 mechanism
• Checkout C1 camera
• Checkout Fabry-Perot
• 14 October - Set PZT voltages to zero in reduced capability mode
• 19 October - Step PZT voltages in reduced capability mode through entire range
• Set CLR/Z offset/Y offset/X offset/Range DACS to nominal settings
• Enter Servo Mode
• Command Range DAC through its range in servo mode
• Cycle FP Launch Lock - Skipped
• Image Door Calibration Window in all Filter Combinations/ Clear Polarizer (5 images)

Block 9
Re-open C2/C3 Doors, calibration checks of C2/C3

• Open C3 Door
• Exposure time checks in all C3 filter and polarizer combinations (21 images)
• Repeat
• Photon Transfer Curve images through all C3 filters (4 images)
• Open C2 Door
• 15 Oct 98 - Image C2 with Lens, ND filter to show fringe pattern
• Move IOCS if necessary - Skipped
• Adjust COB legs if necessary - Skipped
• Adjust IOCS if necessary - Skipped
• Exposure time checks in all C2 filter and polarizer combinations (21 images)
• Repeat
• Photon Transfer Curve images through all C2 filters (3 images)
• Adjust COB legs if necessary - Skipped
• Adjust IOCS if necessary - Skipped
• Adjust Focus if necessary - Skipped