VLT Enables Most Accurate Distance Measurement to Spiral Galaxy NGC 300
An international team of astronomers from Chile, Europe and North America  is announcing the most accurate distance yet measured to a galaxy beyond our Milky Ways close neighbours. The distance was determined using the brightness variation of a type of stars known as "Cepheid variables".
The team used the ISAAC near-infrared camera and spectrometer on ESOs 8.2-m VLT Antu telescope to obtain deep images in the near-infrared of three fields in the spiral galaxy NGC 300. Together these fields contain 16 long-period Cepheids. These stars had previously been discovered by the team in a wide-field imaging survey of this galaxy conducted with the Wide Field Imager (WFI) camera on the ESO/MPG 2.2-m telescope at La Silla.
Henri Boffin | alfa
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