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Table · dataset · 2013

Light curves of two NGC6981 variables

Listed in IVOA Registry (Virtual Observatory)

Two previously unknown variable stars in the crowded central region of the globular cluster NGC 6981 are presented.

Description

The observations were made using the electron multiplying CCD (EMCCD) camera at the Danish 1.54m Telescope at La Silla, Chile. The two variables were not previously detected by conventional CCD imaging because of their proximity to a bright star.

This discovery demonstrates that EMCCDs are a powerful tool for performing high-precision time-series photometry in crowded fields and near bright stars, especially when combined with difference image analysis.

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Astronomical sciences 75% · Image 75% · Imaging 75%
Provenance · 1 source records, 11 field assertions
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concepts[modality].local:modality:imageenrichment · IVOA Registrykeyword-concept-rules@1.0.0title+description (75%)
concepts[modality].local:modality:imagingenrichment · IVOA Registrykeyword-concept-rules@1.0.0title+description (75%)
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