Roman telescope’s coronagraph records its first starlight in orbit
The Roman space telescope passed fine-guidance checks and its coronagraph recorded starlight for the first time in orbit. The September observations are early commissioning tests: a faint star and a second star field confirmed that light reached the instrument and its pointing worked. They do not yet demonstrate the planet imaging the coronagraph is designed to perform.
Science··Evening
First orbital light reaches the coronagraph
NASA reported on September 30 that the Roman space telescope had passed fine-guidance checks and its coronagraph had observed starlight for the first time in orbit. Tech Times independently reported the same commissioning milestone. The first coronagraph observation took place on September 22, followed by another star field on September 27. The news is the release of the test results, not a claim that those observations happened on the report date.[1], [2]
Pointing must hold steady
Roman’s Wide Field Instrument uses small portions of its eighteen detectors to track guide stars. NASA says positions are measured four times a second and fed to the pointing system. The tests addressed the stability needed for observations that may last about half an hour with the wide-field camera or much longer with the coronagraph. A separate spectral guidance mode is still being evaluated. These are engineering checks that prepare later scientific measurements.[1]
A test image is not a planet image
The first coronagraph target was a faint star toward the Large Magellanic Cloud. NASA says its detectors were kept warmer for that early check, while the second observation used cooled detectors and a field of multiple stars. Tech Times also describes these as first-light and pointing milestones. The images establish that light reached the instrument and it could hold a target; they do not show an exoplanet or prove the full starlight-suppression performance needed for future planet studies.[1], [2]
