UT 20230909: Restart Night#8



Night Info

For the night of: Fri, 2023 Sep 8 ---> Sat, 2023 Sep 9
Local midnight = 2023 Sep 9,  7 hr UT, or JD 2460196.792
Local Mean Sidereal Time at midnight =  22 52 44.9

Sunset ( 1000 m horizon):   18 40 MST; Sunrise:   5 54 MST
Evening twilight:  19 59 MST;  LMST at evening twilight:  18 51
Morning twilight:   4 35 MST;  LMST at morning twilight:   3 29
12-degr twilight: 19 29 MST -->  5 05 MST; night center:   0 17 MST

Moonrise:   0 44 MST   
Moon at civil midnight: illuminated fraction 0.269
2.4 days after last quarter, RA and dec:   7 02 36, +27 10.7

Weather: Partly cloudy conditions predicted.


Staff

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

Summary

Night Plan

On-Sky Plan

PEPSI

If Ilya requires (pending analysis)
  1. 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. Science-like script
    • Similar to transform data collection so optional
    • DONE PDS456 (very start of the night)
    • DONE Science-Like with Dual Grating: NGC 40 - 00hr +72 (generate from Restart OT)
  3. Photometric Standards
    • Available first half: Need to check nimgs in scripts (times based on scripts in Restart_2022).
      • M13: twilight - 5 UT
  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
    • DONE If not clear, 1 spectrum/mode
      One spectrum/mode will take 36 min

Mixed Mode test
  1. DONE LBCR + MODS1 preset to HS1946 with TMS single sided
    1. Copoint/Collimate LBCR authorized NONE LBCR.
    2. Pseudo mono for MODS pointing and collimation
    3. Binocular preset for MODS dual grating and LBCR imaging. Send -90 script for LBCR to verify no preset sent, once original script completes.

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. DONE 2021SZ4 (non sidereal tracking) - 120 sec exposures set up but adjust to 60 sec if sky too bright. Good from 1am onward. Take plenty of images for rotation.
    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. Completed. Take MODS cals in advance of OSURC run.

Night log

https://docs.google.com/document/d/1F5TWDWSmQM-KpIi53D9elC-KXZyN2Hyc773x7vw0bG4/edit?usp=sharing

-- JenniferPower - 08 Sep 2023</verbatim>
Topic revision: r3 - 09 Sep 2023, JenniferPower
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