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2019 ALMA Top 10 2021 Science Highlights AAS June 2023 ALMA Astrophotography Project AR Models CDL Co-op Program Stories Desktop/Video Chat Backgrounds Image of the Week Jansky Lectures ngVLA Artist Impressions ngVLA Science Goals PHANGS-ALMA Catalog 2021 The Baseline VERTICO VLA Astrophotography Project VLASS Women in Astronomy IV 2017

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Ike Johnson and Jeff Cromer doing maintenance work on the GBT

Aligning the Quadrant Detector Mountmore_horiz

Engineers on the GBT's backup structure

Hustle and BUStlemore_horiz

Technicians and the GBT's Prime Focus Receiver

The Receiver Has Landedmore_horiz

Technicians and the GBT's Prime Focus Reciever

Rocking the Cradlemore_horiz

Engineers working on the GBT's track

Motor Maintenance at the GBTmore_horiz

Green Bank Engineer John Shelton and the GBT's track

Careful Inspection of the GBT Trackmore_horiz

Engineers and the GBT's track

Inspecting the GBT Trackmore_horiz

Technician working on a GBT azimuth track motor

Wiring a Gear Motor on the GBT’s Azimuth Trackmore_horiz

Technician doing welding work on a GBT track truck

Welding on the GBT Azimuth Trucksmore_horiz

Technician on a GBT track truck

Building the GBT’s Azimuth Trackmore_horiz

Karl Jansky, standing by the highly directional antenna he used to locate the sources of radio static, including that coming from the center of our Milky Way galaxy.

Karl Guthe Janskymore_horiz

Karl Jansky and his map of the Milky Way

Karl Jansky with his Milky Way Mapmore_horiz

Karl Jansky's Radio Telescope

Karl Jansky and his Merry-go-Roundmore_horiz

Karl Jansky

Portrait of Karl Janskymore_horiz

Construction of the VLA WIDAR correlator

WIDAR Under Constructionmore_horiz

Technicians maintaining a VLA antenna

Maintenance of a VLA Antennamore_horiz

Technicians removing the base of a VLA antenna

Splitting a VLA Antenna in Halfmore_horiz

VLA antenna and VLA antenna pedestal in The Barn

Half a VLA Antenna in the Barnmore_horiz

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	Founded in 1956, the NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Observing time on NRAO telescopes is available on a competitive basis to qualified scientists after evaluation of research proposals on the basis of scientific merit, the capability of the instruments to do the work, and the availability of the telescope during the requested time. NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media.
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