SpectroscopicStandards is a browser-based viewer for spectrophotometric standard-star spectra from the ESO, ING, and IRAF catalogues. Search by designation, browse each provider folder, compare available spectra, inspect a finder chart, and download the original data files.
The Sources & citations tab gives one line per data folder of the relevant publication and links each reference to its NASA ADS abstract.
The Target visibility plot is adjusted for the timezone and daylight saving automatically from selected location and date, Although, please be careful with the time on the night of daylight saving.
The webpage generated from the scripts in this repository can be found at: https://cylammarco.github.io/SpectroscopicStandards/
If you have made use of this tool, we would appreciate if you could reference https://zenodo.org/record/7978970.
In version 0.2 (10 August 2026), we have made use of ChatGPT 5.6 Terra.
The viewer uses spectra-index.json for designation, provider, coordinate, and
download metadata. It is built directly from each file's aliases, so multiple
spectra in one provider folder are retained for comparison.
When changing source files or aliases, first regenerate the two committed metadata inputs:
python generate_dictionary.pyThen rebuild the browser index and compressed spectrum assets:
node scripts/build-web-data.mjsThis writes a compressed index and .gz copy of every plain-text spectrum. The
browser loads these gzip assets where DecompressionStream is available and
falls back to the plain text file otherwise. Original files remain in place
for the download links in the interface.