Director's Discretionary Time Observations
Director’s Discretionary Time (DDT) can be requested for time-critical observations that cannot plausibly be scheduled for the regular proposal cycle. These types of proposals might be appropriate for the follow-up of newly-discovered unexpected transient phenomena or when developments since the last proposal cycle make a time-critical observation necessary. They are also appropriate for timely follow-up of new discoveries that will provide a critical link in the understanding of the phenomena.
To view details about a specific program, click the Program ID.
PID | Title | PI | Instruments | Allocated Hours | Cycle |
---|---|---|---|---|---|
9228 | Investigating the Origin of High Redshift Short GRB 241105A and Its Implications for GRB Classification and r-Process Enrichment | Dimple Dimple | NIRCam | 5.4 | 3 |
9224 | MIRI and NIRCam observations of a planetary nebula | Macarena Garcia Marin | MIRI NIRCam |
6.4 | 3 |
9219 | NIRCam Observations of a Solar System Object | Macarena Garcia Marin | NIRCam | 3.8 | 3 |
6838 | Boom and Dust: Near- and Mid-IR Observations of the Nearest Type Icn Supernova Dust Factor | Kyle Davis | MIRI NIRSpec |
7.5 | 3 |
6811 | So Close, Yet So Faint: NIR+MIR Spectroscopy of the Nearest SN Iax 2024vjm | Lindsey Kwok | MIRI NIRSpec |
13.4 | 3 |
6809 | Observing the birth of a black hole in M31 | Kishalay De | MIRI NIRSpec |
9.6 | 3 |
6801 | Completing the control field observations of GO-1905 | Mario Guarcello | NIRCam | 1.5 | 3 |
6797 | Confirming the presence of a gas giant planet orbiting a nearby solar-type star | Charles Beichman | MIRI | 48.8 | 3 |
6785 | NIRCam observations of a protestellar envelope and jet | Macarena Garcia Marin | NIRCam | 4.4 | 3 |
6783 | NIRCam observations of a star forming nebula and young cluster | Macarena Garcia Marin | NIRCam | 5.4 | 3 |
6780 | A Deep Look at Quaoar's Ring System | Benjamin Proudfoot | NIRCam | 3.7 | 3 |
6779 | Pushing Boundaries: Unveiling the Most Distant Fast Radio Burst with JWST | Manisha Caleb | NIRCam NIRSpec |
12.7 | 3 |
6778 | NIRCam observations of a star forming nebula | Macarena Garcia Marin | NIRCam | 7.0 | 3 |
6777 | Finding Black Holes through Gravitational Microlensing | Jessica Lu | NIRCam | 4.1 | 3 |
6775 | NIRCam observations of an evolved galaxy merger | Macarena Garcia Marin | NIRCam | 7.7 | 3 |
6742 | The evolving activity drivers in a newly discovered distant comet | Colin Snodgrass | NIRSpec | 4.0 | 3 |
6716 | Observing Molecule and Dust Formation in the Nearby SN 2024ggi | Chris Ashall | NIRSpec | 4.4 | 3 |
6714 | The evolving activity drivers in a newly discovered distant comet | Colin Snodgrass | NIRSpec | 5.7 | 2 |
6678 | A crucial piece of the puzzle: completing the panchromatic view of a nearby young SN with JWST observations | Rubina Kotak | MIRI | 6.6 | 2 |
6677 | Observing Molecule and Dust Formation in the Nearby SN 2024ggi | Chris Ashall | MIRI NIRSpec |
1.9 | 2 |
6659 | Dust to Dust: Probing the Survival of Cold Dust, New Hot Dust Formation, and Mass-Loss History of the Nearest Type Ibn Supernova | Kirsty Taggart | MIRI | 6.3 | 2 |
6595 | Giant in the Infant Universe: Identification of A Record-breaking Strongly-lensed (Ancestor of) Extremely Massive Quiescent Galaxy | Mingyang Zhuang | MIRI NIRSpec |
5.0 | 2 |
6591 | Cracking the Cosmic Calcium Conundrum: Discovering the origin of Ca-rich transient SN 2024uj with late-time infrared spectroscopy | Lindsey Kwok | MIRI NIRSpec |
8.0 | 2 |
6585 | The High-z Menagerie: A Rare Chance to Study the Early and Exotic Transient Universe | David Coulter | NIRCam NIRSpec |
9.2 | 2 |
6565 | Narrow and broadband imaging of an edge on galaxy | Macarena Garcia Marin | MIRI NIRCam |
19.2 | 2 |
6564 | Imaging of Interacting Galaxies | Macarena Garcia Marin | MIRI NIRCam |
17.5 | 2 |
6558 | Multi-band imaging of protostellar jet | Macarena Garcia Marin | MIRI NIRCam |
7.4 | 2 |
6557 | Imaging dust knots in a planetary nebula | Macarena Garcia Marin | NIRCam | 7.7 | 2 |
6556 | Dust distribution in a colliding galaxy system | Macarena Garcia Marin | MIRI NIRCam |
13.9 | 2 |
6555 | Star-formation in a nearby galaxy | Macarena Garcia Marin | MIRI NIRCam |
7.5 | 2 |
6554 | Infrared imaging of bipolar features in planetary nebula | Macarena Garcia Marin | MIRI NIRCam |
8.6 | 2 |
6553 | MIRI imaging of merger-driven features in galaxy pair | Macarena Garcia Marin | MIRI | 11.0 | 2 |
6550 | When worlds collide: formation and evolution of a synestia | Richelle van Capelleveen | MIRI NIRSpec |
8.6 | 2 |
6549 | Lensed Supernova Encore at z=2! The First Galaxy to Host Two Multiply-Imaged Supernovae | Justin Pierel | NIRCam | 7.3 | 2 |
6543 | Stellar Activity Characterization of LHS 1140 - Is LHS 1140 b a Mini-Neptune or a Water World? | Charles Cadieux | NIRISS | 15.8 | 2 |
6541 | JWST NIRSpec/NIRCam Follow-Up of the High-Redshift Transients Discovered in the GOODS-S JADES-Deep Field | Eiichi Egami | NIRCam NIRSpec |
17.7 | 2 |
4621 | Time-sensitive observations of Chiron: a unique active Centaur beyond 15 AU | Ian Wong | NIRSpec | 4.0 | 2 |
4575 | Dust Our Luck – Measuring Molecule and Dust Formation in M101’s Hydrogen-rich SN 2023ixf | Chris Ashall | MIRI NIRSpec |
4.4 | 2 |
4558 | Establishing the Formation of AF Lep b with NIRCam: The Lowest-Mass Imaged Exoplanet with a Dynamical Mass | Kyle Franson | NIRCam | 6.5 | 2 |
4557 | JWST/NIRSpec confirmation of z~3 transients found by JWST/NIRCam | Haojing Yan | NIRSpec | 10.8 | 2 |
4554 | Revealing the progenitor of the dirty fireball gamma-ray burst AT 2023lcr through its supernova component | Antonio Martin-Carrillo | NIRCam NIRSpec |
4.7 | 2 |
4520 | Near- and Mid-IR Observations to Probe Dust Formation in the Remarkably Nearby Stripped-Envelope Supernova 2023dbc | Melissa Shahbandeh | MIRI NIRSpec |
6.8 | 2 |
4522 | Dust Our Luck – Measuring Molecule and Dust Formation in M101’s Hydrogen-rich SN 2023ixf | Chris Ashall | MIRI NIRSpec |
3.5 | 1 |
4446 | SN H0pe: Independent Measurement of H0 by the Time Delay of a Multiply-imaged Supernova | Brenda Frye | NIRCam NIRSpec |
10.5 | 1 |
4445 | Revealing the nature of the exceptional GRB 230307A: nearby nucleosynthesis or a primordial explosion? | Andrew Levan | NIRCam NIRSpec |
4.9 | 1 |
4436 | Near- and Mid-IR Observations to Probe Dust Formation in the Remarkably Nearby Stripped-Envelope Supernova 2023dbc | Melissa Shahbandeh | MIRI NIRSpec |
1.8 | 1 |
The late time spectrum of a kilonova in the exceptionally bright GRB 230307A | Andrew Levan | NIRCam NIRSpec |
4.9 | 1 | |
The impact of smaller accretion bursts on the planet-forming material in the disk of a young eruptive star | Peter Abraham | MIRI | 2.2 | 1 | |
4426 | An unprecedented spatially resolved analysis of the brightest galaxy at z>10 in GOODS-N | Roberto Maiolino | NIRSpec | 17.7 | 1 |
2787 | A sensitive search for rings and small moons in the Martian system using JWST | Geronimo Villanueva | NIRCam | 5.7 | 1 |
2784 | Late Time Observations of GRB 221009A: The First Search for r-Process Nucleosynthesis in a Collapsar | Peter Blanchard | NIRCam NIRSpec |
11.2 | 1 |
2783 | MIRI LRS follow up on SO2 detection in WASP-39b | Diana Powell | MIRI | 10.7 | 1 |
2782 |
Heavy element formation in the brightest gamma-ray burst of all time |
Andrew Levan |
MIRI NIRSpec |
2.2 | 1 |
2767 | Imaging and Spectroscopy of Three Highly Magnified Images of a Supernova at z=1.5 | Patrick Kelly | NIRCam NIRSpec |
10.3 | 1 |
2756 | Imaging and Spectroscopic Follow-up of a Supernova at Redshift z=3.47 | Wenlei Chen | NIRCam NIRSpec |
9.4 |
1 |
2754 | Unique Constraints on Early Dust Growth in Core-Collapse Supernovae | Justin Pierel | MIRI | 5.6 | 1 |
2750 |
Spectroscopic follow-up of ultra-high-z candidates in CEERS: Characterizing true z > 12 galaxies and z~4-7 interlopers in preparation for JWST Cycle 2 |
Pablo Arrabal Haro | NIRSpec | 8.0 | 1 |
The Volatile Content of Oort Cloud Comet C/2014 UN271 | Bryce Bolin | NIRSpec |
4.4 |
1 | |
JWST Cycle 1 Outreach Campaign |
Klaus Pontoppidan |
MIRI NIRCam |
45.4 |
1 |
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The NASA James Webb Space Telescope, developed in partnership with ESA and CSA, is operated by AURA’s Space Telescope Science Institute.