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
  • DONE 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
    • DONE Filter Wheel Check
    • DONE Rotator Check
    • DONE Move Hubs to Summer Position
    • DONE 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
      • DONE MODS-1
      • DONE MODS-2
    • Mechanical Testing
      • DONE Move Dichrioic
      • DONE Move Filter Wheel
      • DONE Move Gratings
      • DONE Move masks
    • DONE Test Exposures
    • DONE 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
    • ALERT! L1 , DONE 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
    • DONE Power on AGWs
    • DONE Power on/test PEPSI
  • DONE Telescope Test Preset
  • DONE Test opening shutter doors
  • DONE Test building rotation
  • DONE Test closing shutter doors
  • DONE 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

This topic: Commissioning > Main > WebHome > ComCovid19_20A_Restart
Topic revision: 03 Jun 2020, JohnHill
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