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Start Date:1966-01-21 Location:Green Bank, WV People:Behrens, George |
Creator:Records of the NRAO Series:Photographs Series Unit:140 Foot Telescope Unit Type:Still Image Subject:Instruments--140 Foot Telescope
Electronics |
Description:Installing feed for 140 Foot Telescope; George Behrens in corner
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Start Date:1966-01-21 Location:Green Bank, WV People:Logan, Don
Behrens, George |
Creator:Records of the NRAO Series:Photographs Series Unit:140 Foot Telescope Unit Type:Still Image Subject:Instruments--140 Foot Telescope
Electronics |
Description:Installing feed for 140 Foot Telescope. From left: Don Logan, George Behrens
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Start Date:1966-01-21 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:140 Foot Telescope Unit Type:Still Image Subject:Instruments--140 Foot Telescope
Electronics |
Description:Installing feed for 140 Foot Telescope
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Start Date:1966-01-21 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:140 Foot Telescope Unit Type:Still Image Subject:Instruments--140 Foot Telescope
Electronics |
Description:Installing feed for 140 Foot Telescope
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Start Date:1966-01-21 Location:Green Bank, WV People:Behrens, George |
Creator:Records of the NRAO Series:Photographs Series Unit:140 Foot Telescope Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Instruments--140 Foot Telescope
Electronics |
Description:Installing feed for 140 Foot Telescope.
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Start Date:1974-06-27 Location:Green Bank, WV People:Payne, John
Balister, Michael
Kellermann, Kenneth I. |
Creator:Records of the NRAO Series:Photographs Series Unit:140 Foot Telescope Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics
Instruments--140 Foot Telescope |
Description:In June 1974, John Payne (back to camera), Mike Balister, and Ken Kellermann consider the four frequency Cassegrain receiver and feed assembly, with optics designed by Peter Napier, that was the prototype system for the VLA and was also used for the VLBA. It was a new and innovative concept, first developed by the Jet Propulsion Laboratory for use on their Deep Space Network antennas, where the four feeds were offset from the electrical axis and could be illuminated by rotating the asymmetric subreflector. Here it is being installed for testing on the 140ft antenna in Green Bank. [show more]
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Start Date:1974-06-27 Location:Green Bank, WV People:Payne, John
Balister, Michael
Kellermann, Kenneth I. |
Creator:Records of the NRAO Series:Photographs Series Unit:140 Foot Telescope Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics
Instruments--140 Foot Telescope |
Description:In June 1974, John Payne (back to camera), Mike Balister, and Ken Kellermann consider the four frequency Cassegrain receiver and feed assembly, with optics designed by Peter Napier, that was the prototype system for the VLA and was also used for the VLBA. It was a new and innovative concept, first developed by the Jet Propulsion Laboratory for use on their Deep Space Network antennas, where the four feeds were offset from the electrical axis and could be illuminated by rotating the asymmetric subreflector. Here it is being installed for testing on the 140ft antenna in Green Bank. [show more]
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Start Date:1962-05-26 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:300 Foot Telescope Unit Type:Still Image Subject:Electronics |
Description:Original control panel for the 300 Foot Telescope
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Start Date:1969-08-13 Location:Green Bank, WV People:Payne, John
Gum, Maxie |
Creator:Records of the NRAO Series:Photographs Series Unit:36 Foot Telescope Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics
Instruments--36 Foot Telescope |
Description:John Payne and Maxie Gum with feed for 36 Foot Telescope
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Start Date:1969-08-13 Location:Green Bank, WV People:Gum, Maxie |
Creator:Records of the NRAO Series:Photographs Series Unit:36 Foot Telescope Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics
Instruments--36 Foot Telescope |
Description:Maxie Gum with feed for 36 Foot Telescope
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Start Date:1969-10 |
Creator:Records of the NRAO Series:VLBI Series Unit:VLBI Photographs Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics
Very Long Baseline Interferometry (VLBI) |
Description:Charlie, the rubidium clock, carried by Barry Clark from the US to Crimea (via New York, Amsterdam, Bonn, Copenhagen, and Moscow) for use in the May 1971 US-USSR VLBI experiment. Prepared for travel in his special case, Charlie weighed 70 kilograms. His trip included air freight (and brief but worrisome disappearances from its system), suspicious customs agents, bonding agents, reams of paperwork, calls to embassies, automobile trunks too small to carry him, breaker-tripping encounters with 220 volt lines, and several near death experiences as his charge almost ran out. [show more]
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Start Date:1974-01-21 |
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 |
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Start Date:1974-06 Location:Green Bank, WV People:Balister, Michael
Payne, John
Kellermann, Kenneth I. |
Creator:Records of the NRAO Series:Photographs Series Unit:140 Foot Telescope Unit Type:Still Image Original Format of Digital Item:Slide Subject:Electronics
Instruments--Very Large Array (VLA)
Instruments--Very Long Baseline Array (VLBA) |
Description:In June 1974, John Payne (back to camera), Mike Balister, and Ken Kellermann consider the four frequency Cassegrain receiver and feed assembly, with optics designed by Peter Napier, that was the prototype system for the VLA and was also used for the VLBA. It was a new and innovative concept, first developed by the Jet Propulsion Laboratory for use on their Deep Space Network antennas, where the four feeds were offset from the electrical axis and could be illuminated by rotating the asymmetric subreflector. Here it is being installed for testing on the 140ft antenna in Green Bank. Mike says, "Judging by the way I was clutching my head [Ken] must have been giving us a hard time." Ken says he was the project scientist "assigned to hassle the Electronics Division." He adds, "Note I was comfortably sitting down and seem to be the only one that didn’t look puzzled, as appropriate for an advisor." After installation of the Cassegrain cabin on the 140 ft telescope the system was integrated and evaluated by Chuck Brockaway and Tom Dunbrack. [show more]
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Start Date:1964-07-30 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:GB Interferometer Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Instruments--Green Bank Interferometer
Electronics |
Description:Green Bank Interferometer control room
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Start Date:1995-09 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:Green Bank Telescope (GBT) Unit Type:Still Image Original Format of Digital Item:Slide Subject:Electronics
Instruments--Green Bank Telescope (GBT) |
Description:Converter rack, GBT. Top right section: DCR; center right section: receiver; bottom right section: holography.
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Start Date:1995-09 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:Green Bank Telescope (GBT) Unit Type:Still Image Original Format of Digital Item:Slide Subject:Electronics
Instruments--Green Bank Telescope (GBT) |
Description:GBT feed rotator
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Start Date:1995-09 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:Green Bank Telescope (GBT) Unit Type:Still Image Original Format of Digital Item:Slide Subject:Electronics
Instruments--Green Bank Telescope (GBT) |
Description:L-band receiver, GBT
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Start Date:1995-09 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:Green Bank Telescope (GBT) Unit Type:Still Image Original Format of Digital Item:Slide Subject:Electronics
Instruments--Green Bank Telescope (GBT) |
Description:Prime focus receiver, GBT
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Start Date:1995-09 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:Green Bank Telescope (GBT) Unit Type:Still Image Original Format of Digital Item:Slide Subject:Electronics
Instruments--Green Bank Telescope (GBT) |
Description:C-band receiver, GBT
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Start Date:1996-02 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:Green Bank Telescope (GBT) Unit Type:Still Image Original Format of Digital Item:Slide Subject:Electronics
Instruments--Green Bank Telescope (GBT) |
Description:Axiel motor controller cabinet, GBT
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Start Date:1996-02 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:Green Bank Telescope (GBT) Unit Type:Still Image Original Format of Digital Item:Slide Subject:Electronics
Instruments--Green Bank Telescope (GBT) |
Description:Axiel motors, GBT
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Location:Wheaton, IL |
Creator:Papers of Grote Reber Series:Photographs Series Unit:Antennas Unit Subunit:Wheaton Antenna Subunit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics |
Description:Some of Grote Reber's Wheaton equipment used to study cosmic radio emission. On the left is his receiver monitor system, on the right is his 160 MHz amplifier.
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Location:Wheaton, IL |
Creator:Papers of Grote Reber Series:Photographs Series Unit:Antennas Unit Subunit:Wheaton Antenna Subunit Type:Still Image Original Format of Digital Item:B&W negative Subject:Electronics |
Description:Composite photo of Grote Reber's Wheaton antenna and his receiving equipment.
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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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