EXPANDING THE FRONTIERS OF SPACE ASTRONOMY
NIRSpec
Elena Sabbi & the NIRSpec Team JSTUC meeting 12/10/2020
1 NIRSpec at a glance
NIRSpec is an infrared spectrograph NIRSpec operates between 0.6 and 5.3 µm, with resolving powers ~100, ~1000, and ~2700. NIRSpec supports 4 observing modes
Mode Target Type Corresponding Aperture
Fixed slit Single objects 0.2² x 3.2² slits (3) spectroscopy 0.4² x 3.65² slit
Bright Object Exoplanet host stars 1.6² x 1.6² aperture NIRSpec was built for ESA by Airbus Time Series Industries. The MSA and the detector Integral-field Moderately extended objects 3.0” x 3.0” IFU subsystem were provided by NASA. spectroscopy with 0.1” square spaxels IDT PI Pierre Ferruit Multi-object Rich fields or extended Selectable from ~250,000 0.2” x spectroscopy objects 0.46” micro-shutters (MOS)
2 2 Team structure & Responsibilities
Marco Sirianni Catarina Alves de Oliveira ESA Science Stephan Birkman Operation Team Torsten Boeker à Instrument Fabrication (IDT) à Hardware support Nimisha Kumari à Primary ground test coverage Nora Lutzgendorf à Operations à Instrument Commissioning Elena Manjavacas à Calibration Development Nor Pirtzkal à Reference files from test data Tim Rawle Maurice Te Plate Peter Zeidler
3 3 Team structure & Responsibilities
Tracy Beck Alaina Henry Gray Kanarek Diane Karakla Tony Keyes INS NIRSpec Teagan King Branch James Muzerolle à User Support Patrick Ogle à Proposal Planning à Documentation Cheeryl Pavlovsky à Operations Maria Pena-Guerrero à Commissioning à Calibration / Pipeline Charles Proffitt Implementation Elena Sabbi à Post Processing Tools Beth Sargent Leonardo Ubeda Glenn Wahlgren 4 Emily Wislowski 4 Team structure & Responsibilities Teams will merge after commissioning
ESA Science Operation Team à Instrument Fabrication (IDT) INS NIRSpec à Hardware support à Primary ground test coverage à Operations Branch à à User Support Instrument Commissioning à Proposal Planning à Calibration Development à à Documentation Reference files from test data à Operations à Commissioning à Calibration / Pipeline Implementation à Post Processing Tools
5 5 What do NIRSpec data look like
6 6 BOTS mode Time Series Spectroscopy!
Integration… (up to) 65,535!
. .
7 7 IFU mode
(internal lamp exposure from ISIM CV3 tests at Goddard)
Contamination from a failed open MSA shutter
Fixed Slits (always open)
8 8 MOS mode
9 9 MOS mode
Courtesy of G. Giardino
level 3 1D extraction
level 2b product, 1st nod position, both detectors
Fixed Slits (always open)
level 3 combined 2D product
10 10 Planning MOS observations (MPT)
Upload source catalog
Select MSA “slitlet” shape Dither-Nodding strategy
Filter selection
Fully redesigned after the 2018 aborted call forGenerate proposal observations
11 11 MOS proposal review All GOs are asked to submit the science case and the full observing plan at CfP deadline. MOS proposal are the big exception – • Planned Aperture (PA) is assigned by STScI when the Long Range Plan is define • Two steps submission: • A complete observing plan is submitted at the CfP (but not TA) • Second submission after PA assignment – Includes TA and and final targets Implications for the technical review At least for Cycle 1 (and possibly future cycles) we will use a rolling submission (maximize the flexibility of operations and telescope efficiency) • MSA geometrical solution needed by MPT to correctly assign sources to the microshutter (~160 day in commissioning) • Users will have to finalize their observations 6 weeks before the short range plan is prepared • To limit accidents and favor a fast starting of operation we ask GOs that may get their data in the first 3 months of operations to submit their plans as soon as as soon as the geometric solution becomes available. 12 12 Commissioning Preparation and Actitivies
The INS NIRSpec Branch is fully involved Commissioning lead Calibration lead Coordinate CAR and Timeline Coordinate OFF-MOC activities Changes Track CAPs and analysis issues in all the the Commissioning activities, Track CAR and delivery progress Coordinate CDP5 Communicate with the rest of the team both inside and outside the MOC Plan day-to Day NCT activities CaL Test Lead CL CAP Expert On-console support Commissioning activities and and CAP Data Analysis Telemetry monitoring Reference Files Interface with SI room lead Reports Training are organized by the ESA SOT Monitor SI status and Anomaly investigation activities TL Initiate response action in case of anomalies
Training was strongly hit by the WFH SME situation, especially for Voice loop, Subject Matter Experts CAR CAR Expert Eclypse usage, etc. Should restart in Support specific MOC/FCR activities SME for specific CAR Anomaly Investigation QL February Quick Look
Retrieval and processing of data Quick Look Analysis Logging TL backup 13 13 NIRSpec Path to Commissioning
2020 2021 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 L-6
CAPS Development, Testing & Review Training CAPS low priority* Development, Testing & Training
REHARSAL TBD TRAINING TBD CARS Maintenance SI TESTING HW planning Procurement & Installation REVIEWS
Change Management Issue Control NRS Configuration Control (NCIT) COMMISSIONING FALL 2021 HW/SW freeze Launch 14 14 Training and Rehearsal Schedule for NIRSpec
15 15 16 Data Analysis Tools for the JWST Community
• Based on Jupyter platform • Use libraries, like astropy, specutils, etc. • Flexible and easy to embed in different workflows • Designed to work within a Jupyter notebook, as a standalone desktop application, or as embedded windows within a website (e.g., in MAST!) • Three preset configurations • Specviz • MOSviz Notebooks with science cases on how to use the tools • Cubeviz
Camilla Pacifici & the JDAT team 16 16 17 Thank you
Tracy Beck Marco Sirianni Alaina Henry Catarina Alves de Oliveira Gray Kanarek Stephan Birkman Diane Karakla Torsten Boeker Tony Keyes Nimisha Kumari Teagan King Nora Lutzgendorf James Muzerolle Elena Manjavacas Patrick Ogle Nor Pirtzkal Cheeryl Pavlovsky Tim Rawle Maria Pena-Guerrero Maurice Te Plate Charles Proffitt Peter Zeidler Elena Sabbi Beth Sargent Leonardo Ubeda Glenn Wahlgren 17 Emily Wislowski 17