Sixteen days after launch, Roman's 300-megapixel camera read out its first unfocused stars

Live Science describes Roman as partway through a months-long commissioning process with all systems working as they should ^[22], and Scientific American reports the same status in the same week ^[23]. Neither account includes a dated pre-launch milestone list ^[28], so whether any of this is early or late stays open. The activation came about two days after the ten-day dry-out window closed ^[26], and the image was public four days after the activation ^[27].

The two publishers do differ on when usable data starts. Live Science puts Roman's first full science images in early 2027 ^[12]. Scientific American says the first images are expected around the holiday season, with science operations scheduled for January ^[14]. They also describe different primary missions: five years of operation in Scientific American ^[16], ten years in Live Science ^[17].

The green rings are expected at this stage. The camera has not been fully focused, so each star appears as a lime-colored loop ^[6]. Scientific American reports that the focus mechanism, the calibration system and the light filtering devices all came on for the first time during the same activation, with the calibration system put through some testing ^[7]. The wavy rows of squares in the frame are the 18 detectors themselves, translating photons into electrical signals ^[9].

Scientists are preparing for roughly 1.4 terabytes of data a day from the spacecraft ^[10]. At 365 days, that is about 511 terabytes a year ^[11]. That figure counts what comes down the link. The ground system still has to turn those bits into calibrated frames a survey team can use.

"After years of effort to build and test the instrument on the ground, we now have confirmation that it is operational in space. This is a huge milestone," Josh Schlieder, chief scientist for the Wide Field Instrument at NASA's Goddard Space Flight Center, said in a NASA statement ^[18]. He added: "There is much to do, but we are on our way to groundbreaking science." ^[19]

The survey case rests on area. Each Roman image will cover a patch of sky roughly the size of a full moon ^[15], about 100 times the area of a Hubble frame at comparable sharpness ^[13]. Scientific American frames the same advantage differently, putting Roman's five planned years of observing at more than 50 times the sky Hubble has covered in 30 ^[16].

Live Science reports that NASA attributes the possible 22-year lifetime to a successful thruster burn combined with bonus fuel loaded onto the spacecraft at launch ^[24].