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Research

Hot Jupiters in the Southern Sky: The HAT-South Project

HAT-South is a project to search for transiting extrasolar planets in the Southern Hemisphere. It uses a network of wide-field telescopes to monitor hundreds of thousands of bright stars, searching for the characteristic dip in light that occurs when a planet passes in front of its host star. With follow-up observations, the planets discovered in this project will be studied extensively to determine their density, temperature, and even atmospheric composition.

The HAT-South telescopes are located on three sites around the Southern Hemisphere: at Siding Spring Observatory (Australia), Las Campanas Observatory (Chile), and the Hess Site (Namibia). These locations allow fields to be monitored 24 hours per day, which greatly increase the rate at which planets can be discovered.

Each site hosts two "TH4" units. These TH4 units consist of four 0.18m Takahashi astrographs fitted with Apogee 4Kx4K CCDs. Each TH4 unit monitors 64 square degrees of sky at a time, so each site is capable of monitoring 128 square degrees of sky.

The HAT-South project is a collaboration between the Australia National University (ANU), Princeton University, and the Max Planck Institute for Astronomy (MPIA). For further information relating to the ANU involvement in HAT-South, please contact Daniel Bayliss.

Operation at Siding Spring Observatory

The HAT-South telescopes at Siding Spring have been operating since October 2009. Below is a 24 hour video clip of the telescopes on 24 October 2010.



Installation at Siding Spring - Completed

Two TH4 units have been installed at Siding Spring Observatory, Australia. Work from the installation is set out below.

The final Hat-South SSO site with telescopes and shed completed.
28 October 2009.
HS Site


The Hat-South SSO installation team with two TH4 units completed.
27 October 2009.
Telescopes


The Hat-South SSO telescopes partway through installation.
24 October 2009.
Telescopes


Hat-South SSO site with wind fences now constructed around the telescope footings.
10 October 2009.
Wind Fences


A test image of Omega Cen taken using one of the HAT-South Takahashi telescopes at MSO.
18 August 2009.
Omega Cen


The HAT-South equipment shed in place at SSO, with the telescope footings in the foreground.
19 June 2009.
SSO HAT-South
Shed


Constuction of the footings for HAT-South at SSO.
28 May 2009.
Footings for SSO HAT-South
Telescope
The HAT-South equipment shed before its transfer to SSO.
23 March 2009
SSO HAT-South Shed


Site preparation for the two HAT-South TH4 units at SSO.
12 November 2008.
HAT-South SSO Site preparations