Summary of LASCO/EIT Recommissioning Steps

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!! See latest images here
• 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