50 items found
Subject is exactly "Electronics"
Sorted by Title
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
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
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
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
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.
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]
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]
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
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
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
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]
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
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]
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
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
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.
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
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
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
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
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
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.
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.
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
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