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Start Date:1967-02 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers & Equipment Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics
Instruments--Green Bank Interferometer |
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Start Date:1967-02 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers & Equipment Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics
Instruments--Green Bank Interferometer |
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Start Date:1967-02 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers & Equipment Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics
Instruments--Green Bank Interferometer |
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Start Date:1968 Location:Parkes, Australia |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers and Equipment Unit Type:Still Image Subject:Electronics |
Description:Throughout its history, NRAO has shipped state-of-the-art electronics for use in observatories around the world. In March 1968 NRAO loaned to CSIRO a 6 cm front-end containing a cooled parametric amplifier, to be used for joint observations on CSIRO's 210-foot radio telescope in Parkes, Australia. The components were assembled and tested on the 140 foot telescope in Green Bank, with Frank Gardner from CSIRO visiting NRAO to learn the system, and Peter Mezger from NRAO visiting CSIRO to work with staff there. The loan necessitated extensive correspondence between Sandy Weinreb at NRAO, John Bolton, Brian Cooper, and Frank Gardner of CSIRO, and, of course, various embassy attachés and customs officials. In this photo, sent by Cooper as one of a set showing the receiver's installation on the 210 foot dish, the package has been loaded into the tripod lift before being raised to the aerial cabin. [show more]
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Start Date:1976 Location:Green Bank, WV People:Varner, Janet |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers & Equipment Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics
Employees |
Description:Janet Varner pointing to a circuit board. This was probably a circuit board for the Green Bank Interferometer correlator.
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Start Date:1983-08 Location:Charlottesville, VA People:Pan, Shing Kuo
Horner, Neil, Jr. |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers and Equipment Unit Type:Still Image Subject:Facilities--Charlottesville, Virginia
Electronics |
Description:Shing Kuo Pan and Neil Horner in Charlottesville's Central Development Laboratory in August 1983, testing a Superconductor-Insulator-Superconductor (SIS) millimeter-wave mixer for the Tucson 12-m telescope. They are in front of the mixer test setup checking the I-V (current-voltage) curve of the SIS mixer on the oscilloscope. At the low-left corner is the square aluminum mixer test dewar. The mixer dewar is cooled by a 4K closed-cycle, JT/1020 refrigerator. On one side of the dewar, above the green tray at the low-left corner, is the dewar vacuum window (white, circular). On the other side (facing toward Pan and Horner) are three bias/monitor ports. [show more]
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Start Date:1996 Location:Charlottesville, VA People:Webber, John
Wollack, Ed
Bailey, Nancyjane
Lakatosh, Bill
Thacker, Skip
Pospieszalski, Marian |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers and Equipment Unit Type:Still Image Subject:Electronics |
Description:NRAO's MAP team in 1996: l. to r. John Webber, Ed Wollack, Nancyjane Bailey, Bill Lakatosh, Skip Thacker, and Marian Pospieszalski. In June 1996 NASA contracted with NRAO to design and build amplifiers for the Microwave Anisotropy Probe (MAP), later renamed the Wilkinson Microwave Anisotropy Probe (WMAP) after Dr. David Wilkinson, a member of the science team and pioneer in the study of cosmic background radiation. The WMAP satellite mapped the temperature of the background sky in five spectral bands with an angular resolution of 0.3 degrees and sensitivity of 20 microKelvins/pixel after a 9-year mission (Sept. 2001 – August 2010). These measurements have helped to secure rigorous constraints on the origin, content, age, and geometry of the Universe. The MAP team produced total of 120 space qualified amplifiers covering five frequency bands: 20-25, 28-37, 35-46, 53-69, 82-104 GHz. The team worked full tilt on production for several years, and the entire CDL celebrated on 23 October 1999 when the last of 120 amplifiers were shipped. Other MAP team participants not included in the photo: Tod Boyd, Ron Harris, Greg Morris, Gerry Petencin and Bill Wireman; machine shop support came from Tony Marshall, Garnett Taylor, and Matt Dillon, and plating support from Vince Summers. [show more]
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Start Date:1979-08-07 |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers and Equipment Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics |
Description:RFI monitoring vehicle
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Start Date:1968-12-10 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers and Equipment Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics |
Description:Correlator wiring
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Start Date:1984-02-07 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers and Equipment Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics |
Description:Four feed 21 cm receiver
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Start Date:1984-02-07 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers and Equipment Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics |
Description:Four feed 21 cm receiver
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Start Date:1970-01-16 Location:Green Bank, WV People:Weinreb, Sander |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers and Equipment Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics
Employees |
Description:Sandy Weinreb with front end box
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Start Date:1976-01-15 Location:Green Bank, WV People:Varner, Janet |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers and Equipment Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics
Employees |
Description:Janet Varner holding circuit board. This was probably a circuit board for the Green Bank Interferometer correlator
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Start Date:1979-11-20 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers and Equipment Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics |
Description:RFI monitoring truck in Green Bank, 1979. The generator on the trailer was later moved to the inside of the truck. The equipment installed was a spectrum analyzer, NRAO radio and a CB radio. The CB was used to detect power line noise. One could not see the spectrum analyzer from the driver's seat, so the driver had to stop, go to the back of the truck, raise the mast and swung it around manually to look for RFI on the spectrum analyzer. [show more]
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Start Date:1979-11-20 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers and Equipment Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics |
Description:RFI monitoring vehicle in Green Bank
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Start Date:1981-10-18 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers and Equipment Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics |
Description:RFI monitoring truck in Green Bank, 1981. This was the same truck as in the 1979 photo, but configured differently. The antenna is not mounted on the back but is a telescoping mast mounted inside the truck ; there is an opening for cables going to the mast to the left of the truck door. The equipment installed was a spectrum analyzer, NRAO radio and a CB radio. The CB was used to detect power line noise. One could not see the spectrum analyzer from the driver's seat, so the driver had to stop, go to the back of the truck, raise the mast and swung it around manually to look for RFI on the spectrum analyzer. [show more]
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Start Date:1977 Location:VLA Site, NM |
Creator:Records of the NRAO Series:Photograph Series Unit:VLA Unit Subunit:VLA Construction Slides Subunit Type:Still Image Original Format of Digital Item:Slide Subject:Construction
Instruments--Very Large Array (VLA)
Facilities--VLA--Array Site
Electronics |
Description:Electronics lab
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Location:VLA Site, NM |
Creator:Records of the NRAO Series:Photograph Series Unit:VLA Unit Subunit:VLA Construction Slides Subunit Type:Still Image Subject:Construction
Instruments--Very Large Array (VLA)
Facilities--VLA--Array Site
Electronics |
Description:L-band feed on antenna
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Location:VLA Site, NM |
Creator:Records of the NRAO Series:Photograph Series Unit:VLA Unit Subunit:VLA Construction Slides Subunit Type:Still Image Subject:Construction
Instruments--Very Large Array (VLA)
Facilities--VLA--Array Site
Electronics |
Description:Closeup of L-band feed
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Creator:Records of the NRAO Series:Photographs Series Unit:VLBA Unit Type:Still Image Original Format of Digital Item:Slide Subject:Instruments--Very Long Baseline Array (VLBA)
Electronics |
Description:VLBA Mark III system
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Creator:Records of the NRAO Series:Photographs Series Unit:VLBA Unit Type:Still Image Original Format of Digital Item:Slide Subject:Instruments--Very Long Baseline Array (VLBA)
Electronics |
Description:VLBA hydrogen maser
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Creator:Records of the NRAO Series:Photographs Series Unit:VLBA Unit Type:Still Image Original Format of Digital Item:Slide Subject:Instruments--Very Long Baseline Array (VLBA)
Electronics |
Description:VLBA recorder
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Creator:Records of the NRAO Series:Photographs Series Unit:VLBA Unit Type:Still Image Original Format of Digital Item:Slide Subject:Instruments--Very Long Baseline Array (VLBA)
Electronics |
Description:VLBA dipole feeds and front end box
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Creator:Records of the NRAO Series:Photographs Series Unit:VLBA Unit Type:Still Image Original Format of Digital Item:Slide Subject:Instruments--Very Long Baseline Array (VLBA)
Electronics |
Description:VLBA receiver
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Start Date:1993-08 Location:Charlottesville, VA People:Bailey, Nancyjane |
Creator:Records of the NRAO Series:Photographs Series Unit:Electronics, Computers and Equipment Unit Type:Still Image Subject:Instruments--12 Meter Telescope
Facilities--Charlottesville, Virginia
Employees
Electronics |
Description: In the Central Development Laboratory in Charlottesville in 1993, NRAO engineer Nancyjane Bailey, works with the dewar used to test the superconducting SIS receivers (the so-called "rockets") for NRAO's 12 meter telescope at Kitt Peak, AZ. Nancyjane oversaw the construction of all the rockets for the 1.3, 2, and 3-mm bands on the 12 meter telescope -- 17 rockets in all including spares, a major accomplishment. One receiver used 8 of the 230 GHz (1.3-mm) rockets, and another receiver held 2 rockets for each of the three bands. At one point, there was an implosion of one of the dewar vacuum windows, which caused substantial damage to the internal copper heat shield and one of the rockets. The vacuum window was subsequently redesigned. All the SIS mixers for the 12-m telescope (and later for ALMA Bands 3 and 6) were designed in the CDL by Tony Kerr and Shing-Kuo Pan and fabricated in Arthur Lichtenberger's lab at University of Virginia. [show more]
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