Date

Slides & Recording

Slides: 

Meeting recording: 

Attendees

Agenda

  • News & Announcements (all)
  • TSO NIRSpec Tasks 

Discussion items

TimeItemWhoNotes

10min

News & AnnouncementsAll
  • Rocky Worlds Science Advisory Council has been announced
    • Also first targets selected (LTT 1445 A c, GJ 3929 b) (twins to TRAPPIST-1b and c, but different stars)
    • Cannot propose AR proposals in Cycle 4 for these data
  • PandExo DHS functionality
    • Not going to be upgrading for Cycle 4
      • Too disruptive
      • PandExo still consistent for other modes
      • But there are some discrepancies with ETC for DHS that means we need to check with real data
      • Munazza: How should people calculate transit depth precision?
        • Néstor: Use the equation in the example science programs
        • For help desk tickets just point people there. 

Previous and Upcoming Observations
  • 4 successful observations, one failed for TOI-455 (Batalha)
    • Lost lock of guide star (previously failed from TA failure before this!)
      • TA performed with NIRCam imaging
    • Repeat granted with updated NIRCam imaging
    • Scheduled now for December
  • Considering blind TA pointing
    • Néstor and Jeff looked at this, most good within 1", but ~10 outside that
      • 7 of these are bad coordinates
      • 1 binary from RUWE that was misestimated
      • 1 out 70 didn't have obvious issue
      • General conclusion is that blind pointing could be workable, but needs investigation by NIRSpec team
      • Could be weighed against other risks. 
      • Tony Sohn has a lot of scripts in place to take a look at blind pointing accuracy, already tested for NIRCam and NIRISS.
  • Three MIRI observations this week, and three other targets later in the month. 

NIRSpec Proposed Tasks For FY2025
  • Coordination teams used to be working groups
    • Naming, structure, and logging work has changed over the years
    • Now there is more flexibility → Deciding to move tasks to Jira
    • Important: TSO team has no control over FTE's, we can only recommend to the respective INS team
    • So, we "make the menu" and then the managers pick. 
    • Also bound the projects by some specific deliverables and actions
  • Starting with NIRSpec tasks
    • Logged in a Kanban board
    • Not all tasks are for FY2025, but recording them anyway
    • Focusing not just on the tasks, but a work plan and FTE breakdown
  • Discussion of tasks
    • https://jira.stsci.edu/secure/RapidBoard.jspa?rapidView=941&projectKey=JWSTTSO&view=detail&selectedIssue=JWSTTSO-1#
    • 1) Time dependent slopes
      • How does it vary, is it correlated with certain parameters? 
    • 2) Time correlated systematics
      • Leonardo: How does it overlap with existing slope work?
        • Slope is different to the high frequency noise, will be a distinct investigation
      • Loïc: For SOSS, PCA on 2D image series really highlight this beating noise. 
        • ~3rd component is this beating from the IEC
        • We often detrend using these eigenvalues. 
    • 3) NIRSpec backgrounds
      • How significant are they, how do they vary? 
    • 4) Charge Migration
    • 5) PandExo Accuracy
      • How true to life is it? Seems optimistic from some early community analyses. 
      • May be related to higher metallicities and limb darkening treatment
      • Loïc: Maybe point to point is okay but the extraction isn't?
        • Néstor: This is likely true, when comparing ETC for individual light curve point it's pretty good. 
    • 6) Offsets between NRS1/2 detectors
      • Is it dependent on transit depth? How significant are they? 
    • 7) 1/f Noise
      • How best to correct for it? Test different algorithms and find out
      • Loïc: Considering simulations for this?
    • 8) Time-dependent slopes but as a function of wavelenghth 
      • Similar to 2), follow-up
    • 9) MULTISTRIPE for NIRSpec
      • Longer timescale?
    • Leonardo: will they all run in parallel?
      • No, we will propose ranked list - not all of these will be done this year. 





Roundtable Check-In

Brian:

  • Micro-code, John has been reviewing feedback. Pipeline for MULTISTRIPE and DHS will be a little more involved, a report will be coming out soon. 

Next meeting cancelled because of JWST deadline





Action items

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