STEREO-A SECCHI HI Level 2: Solar Heliospheric Images

20140101 is the observation date, 2014-01-01; 180501 is the observation time, 18:05:01 UT. This dataset consists of calibrated and background-subtracted FITS files from the STEREO-A spacecraft's SECCHI Heliospheric Imager (HI) instruments. The data is produced by the UK Solar System Data Centre and includes images from HI-1 and HI-2 cameras.

Use Cases

• Analyze solar wind and coronal mass ejection propagation based on calibrated heliospheric imagery.
• Study the structure of the F-corona using background-subtracted images.
• Track temporal changes in solar brightness based on images with units of Dn/Sec/Pixel, Mean Solar Brightness, or S10.

Strengths

• Data is calibrated and background subtracted, indicating processed scientific quality.
• Filename structure provides explicit observation date and time, instrument (HI-1/HI-2), and processing window length (e.g., 11 days).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Images captured by the STEREO-A spacecraft's SECCHI Heliospheric Imager instruments.

Freshness

Last updated 2026-03-13 11:06:07.288466; freshness should be verified.