Photometric Light Curves for 21,845 Stars at the South Celestial Pole

Antarctic observations from the CSTAR telescope array at Kunlun Station, Dome A provide photometric data for 21,845 stars around the South Celestial Pole. The dataset includes light curves and a catalog, produced by a collaboration including Purple Mountain Observatory and the National Astronomical Observatories of China. The original CSTAR instrument operated from 2008 to 2011.

Use Cases

• Identify variable stars by analyzing the light curve time-series data for periodic brightness changes.
• Train models to classify stellar variability types using the multi-filter (g, r, i, open) photometric measurements.
• Calibrate photometric pipelines for Antarctic observing conditions using the 15 arcseconds per pixel spatial data.
• Conduct population studies of stars in the southern sky using the catalog of 21,845 stellar coordinates.

Strengths

• Contains data for 21,845 distinct stellar objects.
• Observations were conducted from the unique Antarctic site of Dome A, offering exceptional atmospheric conditions.
• Data includes multi-year coverage from the 2008 observing season.

Limitations

• The dataset's primary release is from 2008, with no specified updates for later years.
• The fixed, non-tracking mount introduces specific instrumental artifacts for analysis.
• Sample size of stars is fixed at 21,845, limiting expansion to fainter or new objects.

Provenance

Source

Chinese Small Telescope ARray (CSTAR) at Kunlun Station, Dome A, Antarctica.

Collection Method

Photometric observations from four fixed Schmidt telescopes, each with a different filter (g, r, i, or open), using 1k x 1k CCDs.

Time Range

2008 to 2011 for the original instrument.

Freshness

null

Geography

South Celestial Pole region, observed from Dome A, Antarctica.