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Start Date:1995-12 Location:Chile People:Valladares, Geraldo
Kaifu, Norio
Quintana, Hernan
Readhead, Anthony
Vanden Bout, Paul
Nakai, Naomasa
Inatani, Junji |
Creator:Papers of Paul A. Vanden Bout Series:Millimeter Array (MMA) Series Type:Still Image Original Format of Digital Item:Slide Subject:Instruments--Millimeter Array (MMA) |
Description:In December 1995 on Chajnantor, Geraldo Valladares, Norio Kaifu, Hernan Quintana, Tony Readhead, Paul Vanden Bout, Naomasa Nakai, and Junji Inatani pause for a photo in front of the ALMA operations base on Chajnantor for NRAO, a 20 foot (6 m) long ocean shipping container, still in place on the site. The container provided shelter for personnel and physical support for the instruments. It also had an array of solar panels (visible in back of the container) to supply electrical power, which could supply about 500 W continuously (24 VDC and 110 VAC 60 Hz), with sufficient reserve capacity to weather a storm of a few days. With ca. 2005 instrumentation, this system operated near capacity. Funding for site characterization ceased in 2005 but some equipment continued to operate, monitoring phase stability, until an errant bulldozer severed the interferometer cable in 2009. During their December 1995 trip, the group pictured here made multiple site visits, going to the "NRAO site," the "European site," and the "Japanese site." Photo taken by Angel Otarola [show more]
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Start Date:1994-05 Location:Chile People:Quintana, Hernan
Otarola, Angel
Vanden Bout, Paul
Brown, Robert L. |
Creator:Papers of Robert L. Brown Series:Photographs Series Type:Still Image Subject:Instruments--Millimeter Array (MMA) |
Description:Left to right: Hernan Quintana, Angel Otarola, Paul Vanden Bout, Bob Brown - Auconquilcha - site 19 identified by Smithsonian Astrophysical Observatory as possible MMA site
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Start Date:1994-05 Location:Chile People:Giovanelli, Riccardo
Quintana, Hernan |
Creator:Papers of Robert L. Brown Series:Photographs Series Type:Still Image Subject:Instruments--Millimeter Array (MMA) |
Description:Riccardo Giovanelli center, Hernan Quintana by truck - Auconquilcha - site 19 identified by Smithsonian Astrophysical Observatory as possible MMA site
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Start Date:1994-05 Location:Chile People:Giovanelli, Riccardo
Quintana, Hernan
Otarola, Angel |
Creator:Papers of Robert L. Brown Series:Photographs Series Type:Still Image Subject:Instruments--Millimeter Array (MMA) |
Description:Riccardo Giovanelli at far right, Hernan Quintana, Angel Otarola in center - Auconquilcha - site 19 identified by Smithsonian Astrophysical Observatory as possible MMA site
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Start Date:1994-05 Location:Ollague, Chile People:Quintana, Hernan
Otarola, Angel
Giovanelli, Riccardo |
Creator:Papers of Robert L. Brown Series:Photographs Series Type:Still Image Subject:Instruments--Millimeter Array (MMA) |
Description:Hernan Quintana, Angel Otarola, Riccardo Giovanelli in Ollague, Chile
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Start Date:1994-05 Location:Antofagasta, Chile People:Vanden Bout, Paul
Giovanelli, Riccardo
Quintana, Hernan |
Creator:Papers of Robert L. Brown Series:Photographs Series Type:Still Image Subject:Instruments--Millimeter Array (MMA) |
Description:NRAO was still looking for a site for the Millimeter Array when Paul Vanden Bout and the late Bob Brown made their very first exploratory trip to Chile, 18-23 May 1994. In 2004, Bob wrote about the trip, saying, "I remember vividly our first trip to Chile. It was in May 1994 where we went to see the two 'best' sites that had been identified by the SAO group, both of those sites being near Ollague. The next day we ended up stuck in the sand of the Paso de Jama, but clearly impressed that this area, not the area near Ollague was better if for no reason [than] because of its accessibility. .... Specifically, re Ollague, we visited sites #19 and 20 on the SAO list of candidate sites and there are photos of both (which look like everything else in the Atacama, barren and flat). .... The final result, identification of the Chajnantor site, did not occur on this trip. Instead, that was done on the day following the visit of Bill Harris and Hugh Van Horn to Chile in October 1994." In this photo taken by Bob Brown, Paul Vanden Bout (white hat), Riccardo Giovanelli (light blue sweater), and Hernan Quintana (dark sweater) gas up the rental car in Antofagasta at the start of the trip. [show more]
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Start Date:1994-05 Location:Chile People:Otarola, Angel
Brown, Robert L.
Vanden Bout, Paul
Quintana, Hernan |
Creator:Records of the NRAO Series:Photographs Series Unit:MMA/ALMA Unit Subunit:MMA Chile Site Subunit Type:Still Image |
Description:In this photo, taken by Riccardo Gionvanelli on the way from Calama to Ollague during a May 1994 trip to Chile to scout potential MMA sites, Angel Otarola (left) watches as Bob Brown (red and white jacket) uses a Sun radiometer to measure precipitable water vapor, while Paul Vanden Bout (navy shirt) and Hernan Quintana (navy jacket) survey the surroundings. The pipeline carries water from the mountains to Calama and then to Antofagasta. In the distance between the mountains there is a plume indicating industrial activity, probably from the Chuquicamata/Calama area, so the group is north from there along Route 21. Angel notes that the photo was taken on the way to Ollague, because "on the way back the radiometer got damaged crashing in the roof of the truck due to a bump in the road." Paul says, "The wretched meter, borrowed from Tucson, was not up to the rigors of our adventure. We tried changing the batteries with no effect. Gave it a few whacks and it died altogether." Thanks to Riccardo Giovanelli for the photo and to Angel Otarola and Paul Vanden Bout for caption information. [show more]
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