We are {ALL} made of star stuff
Here at GBO, we know that diversity is integral to achieving excellence. In order to fulfill our missions, we must ensure that our employees have the resources they need to have equal access to opportunities for success and advancement, and feel empowered and encouraged to pursue them. Our goal is to create a fully inclusive work culture across the social spectrum, by holding ourselves accountable for recognizing, acknowledging, and eliminating barriers. We encourage women, people with disabilities, people of color, indigenous people, Hispanic/Latino people and members of the LGBTQIA+ community to apply for positions within our organizations.
Green Bank Observatory has employees who serve in the the Employee Diversity Group (EDG), which is made up of employees from across the organization (AUI, GBO,NRAO) who are committed to creating a more equitable and inclusive culture where people with diverse identities thrive. The EDG works through grassroots engagement, education, and action.
Pride
During Pride Month (June) Green Bank Observatory (GBO) makes a visible change to our logo, because we want to send the clear message that we value our current and future LGBTQIA+ colleagues, friends, and family members. We send this same message internally by taking seriously our obligation to create and maintain an environment that is safe, secure, and welcoming.
We recognize that our LGBTQIA+ colleagues continue to face social and legal challenges in broader society, and we are committed to ensuring that GBO is a place where being yourself is celebrated. We are grateful to the many people who work here – those who are out, not out, and are allies – who make GBO a place at which diversity of sexual orientation and gender identity is welcomed.
At Green Bank Observatory, we aren’t content with learning about diversity and inclusion; we are continually, intentionally working to identify and change policies and practices that exclude or marginalize. Our staff are empowered and encouraged to speak up when they see a need for change; to talk with each other, and to advocate for changes in policies and practices that aren’t serving all of us.
We hope that Green Bank Observatory has proven, and continues, to be a safe and welcoming environment for our LGBTQIA+ colleagues, both internally and in the community. If we fall short, or if there are changes that we need to make, please let us know.



More resources in West Virginia for LGBTQIA+
West Virginia University LGBTQ resources
Marshall University’s LGBTQ+ resources
Green Bank Observatory at #AAS241
SPECIAL SESSION
New Windows onto the Universe with the GBT: Asteroids, Exotic Stars, Gaseous Filaments and More
Monday, January 9th at 9-10AM PT for iPosters session and 2-3:30PM for panel presentation in room 605/610
PRESS CONFERENCE
The Next Generation Planetary Radar System on the Green Bank Telescope
Tuesday, January 10th at 10:15AM PT in room 307/308 or tune in LIVE on the AAS Press Office YouTube Channel
See a list of the most current GBO & GBT related publications
Download the latest GBO booklet, a gift shop discount code, site and trail map, and more

Keep up to date with our latest newsletter
Download a list of GBO & GBT related presentations at the #AAS241 Conference
The Green Bank Telescope & Next Generation RADAR
The Next Generation Radar program (ngRADAR) is a collaboration between the National Radio Astronomy Observatory (NRAO), Green Bank Observatory (GBO), and Raytheon Space & Intelligence. Together they will create an active radar system for GBO’s 100-meter Green Bank Telescope (GBT) using the latest solid-state technology. For twenty years, Green Bank Observatory’s 100-meter radio telescope has studied the radio sky. It has made amazing discoveries, from seeing the vast molecular clouds that surround distant galaxies, to mapping the magnetic fields around the Orion Nebula. The ngRADAR program will further expand the capabilities of the GBT.

2022B Approved Science Program
A total of 70 proposals requesting NSF-funded “open skies” time were submitted to the Green Bank Observatory’s Robert C. Byrd Green Bank Telescope (GBT) for the February 1, 2022 semester 22B deadline. The table below summarizes the approved observing programs. Listed are the PI name, proposal ID, proposal title, maximum hours approved, and proposal type (Regular, Triggered, Large or External). Proposals from previous semesters that were awarded time in the 22B semester are included. The table also includes HSA and GMVA proposals that were awarded time on the GBT as a VLBI station as well as proposals accepted via external agreements with CHANDRA, Hubble Space Telescope, FERMI, SOFIA, Swift, and XMM.
For each approved program, the Proposal Finder Tool will have access to its author, title, abstract and total approved hours.
A description of the Time Allocation Committee report for 22B can be found here.
PI | ID | Title | Hours | Type |
---|---|---|---|---|
Archibald, Anne | GBT22A-358 | Continued Timing of a Millisecond Pulsar in a Stellar Triple System | 50 | Regular |
Bastian, Tim | GBT22A-360 | Probing the Inner Heliosphere with Pulsars: a Pilot Study | 10 | Regular |
Bhakta, Deven | GBT22B-270 | Searching for Globular Cluster Pulsars | 10 | Regular |
Bilous, Anya | GBT22B-266 | Zooming in on Pulsar Microstructure to understand Fast Radio Bursts | 18 | Regular |
Bolatto, Alberto | GBT21B-024 | GBT EDGE: A Representative Survey of the z=0 Universe with Full IFU Spectroscopy | 300 | Large |
Bublitz, Jesse | GBT22B-250 | Refining the Molecular Gas Enigma: Mapping NGC 6781 at 3mm | 16.5 | Regular |
Busch, Michael | GBT22A-434 | SC:Mapping molecular clouds in OH from diffuse to high-mass star forming regions | 300 | Large |
Caleb, Manisha | VLBA22B-074 | Probing the local environment of FRB 20190714A | 6.5 | Regular |
Calore, Francesca | GBT22B-112 | Follow-up of bulge MSP candidates detected by both Chandra and VLA | 24.5 | Regular |
Cameron, Andrew | GBT22A-118 | Continued observations of an eccentric, relativistic binary pulsar. | 57 | Regular |
Dai, Shi | GBT22B-030 | Monitoring the active repeater FRB 20190520B | 24 | Regular |
Dong, Adam | GBT22B-213 | GBT Follow-up of a Novel Repeating Galactic Transient Detected with CHIME/FRB | 32 | Regular |
Emig, Kimberly | GBT22B-170 | Recombination Lines from Diffuse Ionized Gas in the M82 Starburst | 8.75 | Regular |
Fonseca, Emmanuel | GBT22B-215 | Followup Timing of Low-declination GBNCC Pulsars | 10 | Regular |
Frayer, David | GBT22B-162 | GBT HI Observations of the GOALS LIRG 3C84 | 2 | Regular |
Freire, Paulo | GBT22B-143 | Following two potentially super-massive pulsars in NGC 6624 and NGC 1851 | 13 | Regular |
Gallimore, Jack | VLBA22B-148 | OH Masers in the Water Megamaser Disk of NGC 1068 | 12 | Regular |
Goldsmith, Paul | GBT22B-011 | A Novel Technique for Electron Density Determination | 18 | Regular |
Gorai, Prasanta | GBT22A-398 | Exploring Carbon Chain Chemistry of Massive Protostars | 22 | Regular |
Gupta, Harshal | GBT21B-316 | Molecular Exploration of the Diffuse Interstellar mediUM (MEDIUM) | 285.75 | Large |
Huang, Jane | GBT22B-085 | Mapping the Delivery of Material to a Planet-forming Disk – copy | 2 | Regular |
Issaoun, Sara | GMVA22B-249 | Resolving Polarization in Sgr A* with GMVA+ALMA | 10 | Regular |
Jones, Michael | GBT22B-064 | Cold gas reservoirs of satellites in nearby Milky Way-like systems | 96.5 | Regular |
Kooi, Jason | GBT22A-404 | Probing Fluctuations in the Solar Wind with Pulsars: a Pilot Study | 17 | Regular |
Kramer, Michael | GBT22B-231 | Timing and General Relativity in the Double Pulsar System | 101 | Regular |
Lockman, Felix | GBT22B-204 | The Ophiuchus Superbubble — Connecting the Disk to the Halo | 115.5 | Regular |
Lowe, Ian | GBT22B-068 | A Multi-Scale, Multi-Wavelength Study of Dust in Molecular Cloud Filaments II | 21.5 | Regular |
Luo, Jing | GBT22B-269 | PSR J2108+45 with a massive companion and dense circumstellar environment | 36.5 | Regular |
Maan, Yogesh | GBT22B-104 | Transient radio emission from magnetars and connection with FRBs | 23.75 | Triggered |
Margot, Jenan-Luc | GBT22B-209 | A search for technosignatures around newly discovered exoplanets | 2 | |
Mason, Brian | GBT22B-242 | Measuring 3mm Source Contamination in the ACT Galaxy Cluster Sample | 18.75 | Regular |
Maureira, Maria Jose | GBT22B-180 | CO freeze-out across a filamentary dense cloud forming a quadruple system | 25.5 | Regular |
McKean, John | VLBA21B-289 | Resolving the nature of quasar flux-ratio anomalies in gravitational lenses | 60 | Regular |
Naidu, Shantanu | GBT22B-226 | Bistatic Goldstone-GBT Radar Imaging of Binary Near-Earth Asteroid Didymos | 25 | Regular |
O’Neil, Karen | GBT22B-065 | Hunting for Massive Low Surface Brightness Galaxies | 128.75 | Regular |
Park, Jongho | GMVA22B-100 | A Multicolor View of the Black Hole Environment in M87 | 28 | Regular |
Ransom, Scott | GBT22B-256 | Long Term Timing of 65 Recycled Pulsars in Bulge Globular Clusters | 75 | Regular |
Redaelli, Elena | GBT22B-052 | A crucial test for the mass of prestellar cores in a high-mass clump | 2 | Regular |
Ribaudo, Joseph | GBT22A-430 | The Baryonic Tully-Fisher Relation for Galaxies with Supernova Distances | 132 | Regular |
Roberts, Hayley | GBT22B-060 | Understanding the role of dense gas in the most extreme OH megamasers | 34.75 | Regular |
Roth, Nathan | GBT22B-176 | Measuring NH3 and OH in a Target of Opportunity Comet with the GBT | 7.5 | Triggered |
Salas, Pedro | GBT22A-269 | Probing the C+/C interface in the Orion Bar | 16.5 | Regular |
Salas, Pedro | GBT22A-437 | SC: GBT Diffuse Ionized Gas Survey at Low frequencies – GDIGS-Low | 826 | Large |
Salome, Quentin | GBT22B-049 | A survey of atomic gas in NLSy1 galaxies with X-ray Ultra Fast Outflows | 31.25 | Regular |
Sanchez, Monica | GBT22B-228 | Observations of Marginal Arecibo HI 21cm Detections in the Zone of Avoidance | 4.5 | Regular |
Schmiedeke, Anika | GBT22B-191 | Feeding a super-critical filament in a subsonic core | 17.5 | Regular |
Scibelli, Samantha | GBT22A-435 | SC: Q- Band Chemical Complexity Survey of Prestellar Core L1544 | 647 | Large |
Singal, Jack | GBT19A-083 | How Bright is the Radio Sky? A 310 MHz Absolute Map | 30 | Regular |
Song, Yiqing | GBT22B-248 | Mapping HCN and HCO+ in Local Luminous Infrared Mergers | 19.5 | Regular |
Spekkens, Kristine | GBT22B-139 | Atomic Gas in the Host Galaxies of Gravitational Wave Events – LVK O4 | 40 | Triggered |
Spezzano, Silvia | GBT22B-040 | Exploring the chemistry of Sulfur towards the young starless core L1521E | 18 | Regular |
Sridharan, T.K. | GBT22A-366 | Path to Precision Astrochemistry with Magnetars II – mm-wave Observations | 33 | Regular |
Stark, David | GBT22A-325 | Understanding diverse HI depletion times in MaNGA star forming galaxies | 79.25 | Regular |
Stark, David | GBT22A-436 | SC: Robust Gas Measurements for BreakBRD Galaxies | 206.5 | Large |
Traianou, Efthalia | GMVA21B-164 | Moving and stationary shocks interaction after a gamma-ray flare in TXS2013+370 | 27 | Regular |
Valdivia Mena, Maria Teresa | GBT22B-163 | Mind the gap: connecting the scales between filaments and protostars | 18 | Regular |
Wen, Di | G22A001 | A magnified view of an ionised scattering medium in a z= 1.145 late- type galaxy | 36 | Regular |
Wolszczan, Alexander | GBT22B-200 | A search for planets around white dwarfs | 18 | Regular |
Yang, Chentao | GBT22B-020 | Confirming the nature of a 380GHz H2O maser disk in a lensed quasar at z=3.91 | 14 | Regular |
2022b Results
22b Green Bank Observatory Time Allocation Committee Report
A total of 70 proposals requesting NSF-funded “open skies” time were submitted to the Green Bank Observatory’s Robert C. Byrd Green Bank Telescope (GBT) for semester 22B. Proposals are reviewed on a competitive basis with a panel review system (see Proposal Review System). Below are the statistics by proposal count and hours. The oversubscription is the ratio of the number of submitted proposals to the number of approved proposals. The pressure is the ratio of the requested time to the available time in hours. Here we only include proposals submitted for the 22B semester that have been reviewed by the Green Bank Observatory Telescope Allocation Committee (TAC).
A description of the 22B proposals accepted can be found here.
Statistics by Proposal Count
Total Proposals | 70 |
---|---|
Approved | 30 |
Filler | 19 |
Rejected | 18 |
Hold | 2 |
Withdrawn | 1 |
Oversubscription | 2.33 |
Statistics by Proposal Hours
Requested Time | 3334.25 hours |
Available Time | 1838.75 hours |
Approved | 694.75 hours |
Filler | 376.75 hours |
Rejected | 2134.75 hours |
Pressure | 1.8 |
GBT Pressure Plots
Observations in high-frequency bands require better weather conditions than observations in lower frequency bands. The GBT uses three weather categories: poor (for observations below 8 GHz), good (observations between 8-18 GHz and 26.5-50 GHz), and excellent (observation in the 18-26.5 GHz band and above 50 GHz). The first three figures below show the pressure plots for each of these weather categories. The last figure includes all-weather categories. The black horizontal line shows the total available hours. The letters A, B, and C correspond to the priorities assigned by the TAC where A and B are approved time and C is filler time. Carryover is time allocated by a TAC from a previous semester that is being executed in the 22A semester.




GBT Observation Preparation
Please use the GBT Dynamic Scheduling System (DSS) to enable observing sessions, select observers for your project, and enter your blackout dates. The DSS Home Page has additional information about the DSS. See GBT Observing for information about how to prepare for your observations.
Please note that the DSS uses the average Right Ascension (RA) and Declination (Dec) of all sources within a session. The average RA and Dec will be used to determine when the session can be scheduled. You will need to carefully check the RA and Dec, along with the minimum and maximum session lengths, to make sure that these values are satisfactory and will allow all your sources to be observed before enabling the session.