Observing

This page summarizes my observing programs as a principal investigator, lead observer, and co-investigator, as well as other observing experience.

Approved Programs as Principal Investigator/Lead

• 2022 – VLT/FORS2: The hunt for gravitationally lensed quasars in the early Universe. 4.7 hours; program 110.243U.002.
• 2019 – VLT/MUSE: Probing the environment of the highest-accreting supermassive black hole at z > 6. 5 hours; program 0104.B-0665(A).
• 2019 – ALMA: What is the environment of the highest-accreting black hole at z > 6? 2 hours; program 2019.1.01436.S.

Selected Programs as Co-Investigator

• 2023 – Gemini/GMOS-S: Confirming the highest-redshift AGN acting as a strong gravitational lens. 2 hours; GS-2023A-FT-111 (PI: J. Chan).
• 2021 – JWST/NIRSpec and NIRCam: A complete census of supermassive black holes and hosts. 49.5 hours; program 01967 (PI: M. Onoue).
• 2021 – GTC/EMIR and NOT/NOTCam: The Canarias search for the first quasars. 72 hours with GTC and 10 nights with NOT (PI: E. Bañados).
• 2021 – NOEMA: Molecular-line scan of the infrared-luminous quasar PJ083+11 at z = 6.34. 20 hours; S21DI (PI: R. Decarli).
• 2019 – HST/WFC3: Testing the accretion and lensing interpretations of PSOJ083+11. 4 orbits; GO 15707 (PI: K. Jahnke).

Observing Experience

• 2020–2021 – LBT/MODS and MPG/ESO 2.2m/GROND: Search for reionization-era quasars; more than 100 hours in visitor mode (PI: E. Bañados).
• 2020 – VLT/FORS2: Confirmation of reionization-era quasars; 2 nights, program 106.20WQ (PI: E. Bañados).
• 2019 – Gemini-N/GNIRS: Confirmation of an active black hole at z = 6.34; 3 hours, GN-2019A-FT-204 (PI: M. Onoue).
• 2019 – NOT/NOTCam: Search for z > 6.5 quasars; 5 nights, program 59-015 (PI: R. Decarli).
• 2019 – Rozhen 2m telescope: Optical intranight variability of gamma-ray blazars; 30 hours during the NEON Observing School.
• 2019 – Calar Alto 1.23m telescope: Nearby exoplanet search; 10 nights of remote observing through Project EDEN.
• 2017 – Thai National Observatory 2.4m/MRES: Spectroscopy of binary AGN candidates; 3 nights.
• 2013–2018 – Bosscha Observatory, 20–70cm telescopes: Observations of transiting exoplanets, novae, nebulae, and other emission-line objects; more than 20 nights per year.