UT 20230908: Restart Night#7



Night Info

For the night of: Thu, 2023 Sep 7 ---> Fri, 2023 Sep 8
Local midnight = 2023 Sep 8,  7 hr UT, or JD 2460195.792
Local Mean Sidereal Time at midnight =  22 48 48.4

Sunset ( 1000 m horizon):   18 41 MST; Sunrise:   5 54 MST
Evening twilight:  20 00 MST;  LMST at evening twilight:  18 49
Morning twilight:   4 35 MST;  LMST at morning twilight:   3 24
12-degr twilight: 19 31 MST -->  5 05 MST; night center:   0 18 MST

Moonrise:  23 50 MST   
Moon at civil midnight: illuminated fraction 0.359
1.4 days after last quarter, RA and dec:   6 07 58, +27 34.3

Weather: Partly cloudy conditions predicted.


Staff

  • OSA: Steve Allanson
  • ISA/SO: Jenny Power
  • ECD Coordinator: Jenny Power

Summary

Night Plan

On-Sky Plan

PEPSI

  1. DONE AGw7/8 Alignment
    • Verify SH
  2. DONE M3 Alignment PFU
    • Pupil alignment check - find star and center it
    • Could possibly be refined on SX but looks pretty good
  3. DONE Throughput measurements (2 hrs over 3-4 nights)

MODS
  1. MODS Sky flats
    • Completed 3Kx3K imaging flats in ugri
    • Pending 3Kx3K imaging flats z
  2. Photometric Standards
    • Available first half: Need to check nimgs in scripts (times based on scripts in Restart_2022).
      • M13: twilight - 5 UT
  3. Science-like script
    • Similar to transform data collection so optional
    • Science-Like with Dual Grating: NGC 40 - 00hr +72 (generate from Restart OT)
  4. Spectrophotometric Standards
    • BD+33 until 04:30UT, BD+28 until 10UT, DONE Feige110 6-10UT, G191-B2B from 9:30UT to twilight. Try to get Feige110 and/or G191-B2B which means standards are 2nd half of night.
    • If Clear, 2-3 spectra/mode
      For 3 spectra/mode, this will take 1hr/star
    • If not clear, 1 spectrum/mode
      One spectrum/mode will take 36 min

LBC Checkout
  1. Twilight flats: Try to obtain flats through all 6 B and 8 R filters during the course of restart
    • Completed LBCB r LBCB r
  2. High and Low elevation test. Execute 2 fields, one at high elevation and one at low.
    1. Science Like OBs
      1. Crescent Nebula (20hr +38)
      2. TBD
    2. #Standard Fields*: If photometric, observe at least one photometric standard star field from each set (also tests dithering, but not guiding):
      1. Clem & Landolt
        • LBCB: UBV
        • LBCR: VRI
      2. sdssY
        • LBCB:gr (+Us as filler)
        • LBCR: rizY

Closed Dome Plan

  1. SX Flat optimization with LBTI WFS
    1. Configure the telescope for LBTI (can not be done in parallel to moving telescope or swingarm tasks)
    2. Requires stow mins in, on oil, dark chamber, argos source deployed
    3. Acquire the argos source with the LBTI WFS, close the loop. Save a new flat. Rinse and repeat
  2. MODS reference Calibrations: Contingent on repairs to MODS1 quadcell and completion of tasks 1 & 2
    • Telescope at zenith, lights off for all but the lamps. Take these as able, but try to get through the (1) BIases, (2) Comparison lamps (grating), (3) Slitless pixel flats and (4) Imaging flats and then the dual grating slit flats.
    1. Slit flats:
      • Dual
        • 2.4" - 18 min
        • 5" - 18 min
        • 0.3" -
      • Red (67, w/o 0.3")
        • 0.3"
      • Blue (81, w/o 0.3")
        • 0.3" - 15 min
    2. Comparison lamps (prism = prlamps)
      • 23 min total - good check on whether all the lamps are working.
        • dual - 8 min
        • red - 7 min
        • blue - 7 min


Night log

https://docs.google.com/document/d/15H65_8kSnnE_sJKu7--R98Mg4Hu1rNxisnoeSZjSz6g/edit?usp=sharing -- JenniferPower - 07 Sep 2023
Topic revision: r3 - 09 Sep 2023, JenniferPower
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