ROSETTA-ORBITER OSIRIS NAC: Calibrated Comet 67P Images from Prelanding Phase

Solar stray-light corrected, radiometrically calibrated, and geometrically corrected image data in reflectance units from the OSIRIS Narrow Angle Camera aboard the Rosetta spacecraft. The dataset covers the prelanding mission phase from June 4 to July 2, 2014, with the prime target being comet 67P/Churyumov-Gerasimenko. This V1.0 version is the first release of the dataset, corrected after an external peer review in September 2019.

Use Cases

• Analyze comet surface morphology and albedo variations based on calibrated reflectance data.
• Train machine learning models for feature detection on planetary bodies using processed space imagery.
• Study temporal changes on the comet's surface during the spacecraft's approach phase.
• Validate geometric correction and radiometric calibration algorithms for remote sensing instruments.

Strengths

• Data has undergone multiple correction steps including solar stray-light, in-field stray-light, radiometric, and geometric distortion corrections.
• Covers a defined temporal range from 2014-06 04T10:50:00.000 to 2014-07-02T08:34:59.000 during a critical mission phase.
• Version V1.0 indicates a peer-reviewed and corrected release following an external review in September 2019.

Limitations

• Column-level documentation is absent; field semantics and image metadata structure must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment for large-scale processing.
• Data freshness should be verified; the last metadata update was 2026-03-13, but the underlying data is from 2014.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Acquired by the OSIRIS Narrow Angle Camera on the Rosetta spacecraft.

Time Range

2014-06-04T10:50:00.000 to 2014-07-02T08:34:59.000

Freshness

Metadata last updated 2026-03-13; underlying data from 2014.

Geography

Comet 67P/Churyumov-Gerasimenko