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Las Campanas Observatory 1m Swope Telescope.
TEK 5 CCD, SITe 1 2048x2048 CCD
The NGC 3201 field was observed using a single pointing centered on the cluster center with a field-of-view of about 24° on the side.
Observations of NGC 3201 were conducted in both V and I filters. Exposure times were 600s in both filters for the time-series data, complemented by single-epoch shorter exposures for color-magnitude diagram purposes.
The data were processed using standard IRAF routines; photometry was done using DoPHOT, subsequent relative photometry using a customized pipeline (akin to standard differential ensemble photometry). Variability detection was based on a chi-squared algorithm, period determination on Minimum-String-Length and Analysis-of-Variance method.
The data parameters fall into the following approximate ranges:
|RA (2000)||10 16.466||10 18.685|
|Dec (2000)||-46 36.693||-46 12.920|
|HJD of the
|Total number of stars||-||58666|
|Number of epochs||-||~120|
Figure 1: Color image of NGC 3201 with location of detected variable stars.
|NGC 3201 summary file||IPAC ASCII format table|
|NGC 3201 light curves||Download scripts|