July, 2011 ....J. Dana Hrubes...updated July 31, 2011,  1159 GMT
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aurora
Aurora Australis with a corona formation "raining" down  over the Dark Sector Laboratory (DSL)

July is usually the coldest month of the year at the geographic South Pole, but this year the low for the month of July was only  -94 F (-70 C). Hopefully, we'll see colder temperatures next month. However, we did have some of the most colorful aurora Australis that I have seen in a while.      corona formation over DSL      bright corona    aurora-1   aurora-2    aurora-3    aurora-4   

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The South South Pole Telescope (SPT) backlit by an aurora

More aurora Australis and SPT:  SPT and aurora     SPT and colorful aurora    SPT, DSL, aurora    

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The Dark Sector Laboratory, a colorful aurora, and a satellite trace

More auroras and stars at the Dark Sector Laboratory:   DSL, stars, aurora      colorful aurora behind DSL   

The South Pole Telescope continued to operate well this past month as we are nearing completion of our 5 year wide area galaxy cluster survey using the Sunyaev-Zel'dovich effect. In addition to conducting normal telescope operations, data quality analysis and computer software upgrade work, we also addressed typical troubleshooting and repair issues.    

Numerous technical papers have been published by the SPT team over the past couple of years on the discovery of massive galaxy clusters, their relation to Lambda-CDM cosmology and the impact they have on the understanding of dark energy. Other results include the discovery of other point sources such as dusty star-forming galaxies and refinements of the cosmic microwave background (CMB) power spectrum at small angular scales. (click on technical paper link below)

Next month - August: The Last Complete Month Without the Sun!
Recent South Pole Telescope Technical Papers  

A Real-Time Photo of South Pole Station as Seen from the ARO Building (live when satellite is up)
A Comprehensive South Pole Web Site by Bill Spindler
Winterover Web Pages (Bill Spindler's List)

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