Fast Turnaround Snapshot Imaging Mode

We are implementing a new Fast Turnaround Snapshot Imaging mode at the CHARA Array. We will reserve up to 1 night per month of open access time for this new mode. During the 2025A semester, the snapshot observations will be scheduled on May 6, 2025 (full night) and June 1 and 3, 2025 (first half nights). The observations will be collected with the MIRC-X/MYSTIC combiners in the near-infrared H and K-bands. The snapshot observations will consist of a single CAL1-SCI-CAL2 set (~ 1.5 hours of time).

Snapshot imaging proposals should fill one of the following criteria:

  • Spatially resolved confirmation of high impact findings.
  • Exploratory observation as a check on feasibility before applying for a standard proposal.
  • Following up unusual/unexpected astronomical events.
  • Completion of a project to allow publication, when one more set of data is needed for confirmation.

Who Can Apply for the Snapshot Imaging Mode?

The snapshot imaging mode is open to all observers. Priority will be given to observers who do not have existing time scheduled at the Array and for targets that are not already included in peer-reviewed science programs that were awarded time.

Review of Snapshot Proposals

During the trial phase of the snapshot imaging program, the proposals will be reviewed by CHARA staff. The proposals will be evaluated based on the merit of the science, impact of the observations, timeline for publication, and/or the need for a feasibility check.

Snapshot proposals can be submitted at any time during the current observing semester and will stay active until the end of the semester. Principal Investigators will be notified at least one week before the observation if their proposal is selected to be scheduled.

How to Apply for the Fast Turnaround Snapshot Imaging Mode

Please fill out the following form to provide a description of the requested observations and a short summary of the scientific significance:

Application for the Fast Turnaround Snapshot Imaging Mode

For standard proposals please following the instructions on the Applying for CHARA Time page.