Restart Plan for COVID-19 20A

---

This is the plan for bringing the telescope, MODS, and LBCs back on-sky with checks.

LUCI verification checks TBD when instruments are fully cooled.

LUCI-1 Imaging mode only - MOS unit locked out as of UT 05/29/20

---

General Scope of Activities

• Closed Dome/Daytime Instrument Checks
• Telescope Wake-up
• Basic On-sky Instrument Checks
• High priority Engineering on-sky checks
• Lower priority Engineering on-sky Checks
• Release of Facility Instruments for Science Observing

Closed Dome Checks

• Verify LBCs are operational - functional checkout
  • Filter Wheel Check
  • Rotator Check
  • Move Hubs to Summer Position
  • Test Bias Exposures (test communications)
  • Monitoring LBCB temperatures - +10 rise in temp over last 8 hours and jumps up and down in temp (05/30/20),
• Verify MODS are operational - functional checkout
  • Cold Start scripts for after restart
    • MODS-1
    • MODS-2
  • Mechanical Testing
    • Move Dichrioic
    • Move Filter Wheel
    • Move Gratings
    • Move masks
  • Test Exposures
  • Internal Calibrations
    • Ne Lamp on MODS-1 issue - IT 8107
    • Debris lower left corner MODS-1 images - likely field lens
• Verify LUCIs are operational - functional checkout
  • L1 , L2 Functional Checkout (warm)
  • Functional Checkout (cold)
  • Test Exposures (test communications)
  • Internal Calibrations (some might be done during functional checkout)
• Verify PEPSIs are operational - functional checkout - TBD AIP
  • Power on AGWs
  • Power on/test PEPSI
• Telescope Test Preset
• Test opening shutter doors
• Test building rotation
• Test closing shutter doors
• Communications with Mountain tested for night operations

On-sky Tasks

• LBC
  • Collimate WRS/DOFPIA - high priority
  • Superfocus sequence - low priority (only if time available)
  • Twilight Flats - high priority (Us+Y, B+R, V+I then U+F, r+r, r+z, g+i, V+V)
  • Standard Photometric Field (requires clear sky any seeing) - high priority (requires two visits - each at different airmass) SA107
  • Spectrophotometric Field (requires clear sky any seeing) - high priority (requires two visits - each at different airmass) BD+26
  • Test Science OB
    • Sidereal - goal is to make sure dither and guiding are OK - high priority (MGC+05 up all night, Bessell & sloan OBs)
    • NS - quick - goal is to make sure dither and guiding are OK - high priority (need target)
  • Rotational Trailing (IT 8021) - medium priority
    • configuration files changed to enable rich logging on UT June 01 2020 16hr
  • Collimation Model Checks (IT 8091) - medium priority
• MODS
  • AGW 5/6 check - high priority
    
    • Verify Guiding and Wave-front sensing work
    • Verify AGW rotator center
  • Verify Rotator ZP with MODS mask acquisition - medium priority - should not have changed - if time good to verify (20min)
  • Spectrophotometric Standard - high priority (requires two visits - each at different airmass) (HZ44 early, BD+33 later, BD+28 if in morning twilight)
  • Imaging Photometric Standard (requires clear sky any seeing) - high priority (requires two visits - each at different airmass) - M13 or M92 fields
  • Twilight Imaging Flats - high priority
  • Test Science OB - high priority
    
    • Imaging
    • Longslit (dual grating obs of Q1704+701, V=17.5, 3x300-sec)
    • NS - medium priority
• PEPSI (TBD by AIP) - high priority
  • AGW7 and AGW8 checks with guiding and collimation
• M3 Alignment for PEPSI (TBD by AIP or John Hill = should not be needed - nothing has been dismounted)
• LUCI (TBD when LUCIs are cold)
  • AGW 1/2 Check - high priority
    
    • Verify Guiding and wave-front sensing work
    • Verify AGW rotartor center
  • Test Science OB- high priority
  • Verify Rotator ZP with LUCI MOS mask - medium priority - should not have changed - if time good to verify (20min)
  • Verify AGW Transforms - medium priority - should not have changed (0.5hr)
  • NS Test OB - medium priority
  • Imaging Spectrophotometric Standard (requires clear sky any seeing) - high priority (requires two visits - each at different airmass)
  • Imaging Photometric Standard (requires clear sky any seeing) - high priority (requires two visits - each at different airmass)
• LUCI/LBC - mixed mode check - medium priority

-- BarryRothberg - 28 May 2020