achieve.

</p>

Together with others, Adam initiated development of the astroquery and

regions packages, and continued maintaining or contributing to both since.

He developed the fft part of the convolution package and maintained it

since. Adam played small roles in a number of other areas, but particularly

recently in outreach to the radio community by creating tools

(spectral-cube, etc.) that link radio data to astropy.

Adrian is the lead coordinator and developer behind the Learn Astropy and

Astropy tutorials initiatives. He was an initial contributor of the concept

and code for the Quantity class in astropy.units and serves as lead

developer of astropy.coordinates. In the latter role he was a key player in

adding support for velocity data such as proper motions in

astropy.coordinates.

Since coming to the project in

2014, Brigitta has been an active and valued member of the Astropy community

in many key roles. Most notably, she has been the lead developer and maintains

and release distribution. She is an astropy core release manager and

the GSoC coordinator for Astropy.

Erik has played a key leadership and technical role in the Astropy project

since it began in 2011. His contributions include writing large parts of the core coordinates and

uncertainties packages, serving in the Coordination Committee since 2011,

serving as a release manager and a number of infrastructure roles, providing

leadership on writing the Astropy papers and proposals, and Finance

committee work.

Kelle has been on the Coordination Committee since 2016 with a focus on

community management, user discussion forums, workshops, and expanding

educational materials. Her role as the Learn Coordinator has been especially

impacting. She has played a crucial lead role in the areas of governance,

fundraising, and grant writing as Astropy has grown into a large and widely

recognized project.

Larry has served as the lead developer and maintainer of the Photutils

package (an Astropy coordinated package for source detection and photometry)

since 2014. He also is as a maintainer of the astropy regions package

and the astropy visualization, stats, and convolution subpackages.

Madison was a founding member of the Astropy project and was the main

developer of the io.fits core subpackage which forms the basis of much of

the I/O for astropy. After taking a hiatus from Astropy in 2016 for another

opportunity, Madison rejoined in the role of DevOps and Operations Support

in 2020.

Marten has been actively involved in astropy core development since 2013. He

has made many key contributions, most notably leading the effort to make

Quantities truly useful throughout astropy by working with and contributing to numpy to ensure interaction

accuracy at the level needed for pulsar timing, and he played an important

role in making the Table class versatile.

Since becoming involved in the project in fall 2013, Matt co-led the

development of ccdproc, the coordinated package for optical/IR image data

reduction and served as lead for the NDData subpackage. He also served

on multiple Python in Astronomy organizing committees, helped with a couple

of coordination meetings, and worked hard to make sure the astropy ecosystem

of packages is available on major platforms to improve accessibility.

Michael was a prolific contributor to Astropy from 2011 through 2015,

contributing over 400 pull requests in many areas of the core, with a focus

on the wcs, votable, and table subpackages. His deep understanding of best

coding practices provided important inspiration for other members of the

initial core development team.

Moritz has been involved in the Project since 2011, with contributions to

the io.ascii package and a continuing role as a package maintainer. He has

also contributed to the stats core subpackage and the photutils and saba

packages. Since 2020, Moritz has been serving as an Affiliated Package

review editor and has been an active member of the interim Finance Committee.

Nadia has been an active member of the project since it started, where she

has been the lead developer and maintainer for the modeling and wcs

packages. She has also been involved with the serialization of astropy

objects to the ASDF format.

More than any other single person, Perry has been responsible for the

adoption of Python in astronomy. He recognized the promise of Python as a

language for astronomical data analysis and processing far before the rest

Committee member from 2011 to 2016. In 2020, Perry took on the role of

Ombudsperson.

Pey Lian has been an important team member since 2012, providing key

infrastructure and operational support focused on the core package. In her

maintainer roles for testing and documentation infrastructure and DevOps and

GitHub Actions in 2020. Pey Lian's tireless attention in triaging core

issues is well-recognized.

After a first pull request in 2012, Simon became a regular contributor to

Astropy around 2015. Since 2017 he has been the main maintainer of io.fits,

taking on the daunting role of managing this complex and critical

subpackage. He also contributes other parts of Astropy including

infrastructure, modeling, io.ascii, stats, table, and visualization.

In 2011, Tom was part of an initial core group that recognized the need for

a common Astropy package for the community, and he helped organize the first

official Astropy coordination meeting. Since that time he has been an active

contributor to the project, taking a lead role in the development and

maintenance of three core subpackages: table, time, and io.ascii. In 2016 he

was appointed as one of the Astropy Project Coordination Committee members.

Tom has been a recognized leader in the Astropy project since it began,

being part of the core group that started the project and organized the

first Astropy coordination meeting. His individual contributions are too

Astropy project by either direct funding to the project or by indirect funding

of employees who have contributed.

STScI has played a foundational role in the development and advancement of the

Astropy Project since its inception. STScI has provided continued and

substantial support to the project via staff contributions since 2011, including

six lifetime contributors to astropy. Additionally, STScI has provided on-going

support and leadership to both Astropy and the broader scientific Python

computing ecosystem.

In late 2019 the Astropy project was awarded a major grant from the Gordon and

Betty Moore Foundation. This grant was targeted at supporting Astropy’s

transition to a fully sustainable project, where success no longer hinges on a

limited set of contributors. This grant was transformative for the Project.

NASA has awarded funding for the Astropy Project through the

"ROSES E.7 (Support for Open Source Tools, Frameworks, and Libraries)" program.

This funding is used in particular to support ongoing infrastructure work, help

with maintaining the core package, and to support the ecosystem of affiliated packages.

This grant helps to ensure that Astropy remains a sustainable project.

The CXC has supported multiple staff members to work on the Astropy project,

equivalent to more than 5 person-years since the start of the project.

We wish to express gratitude to the NumFocus Organization for providing the

organizational support to grow Astropy into the role of a community-leading

project with a substantial budget.

The CCA has provided logistical and travel support for the Python in Astronomy

conference, the coordination meeting, and the spectroscopy working

group.

Dunlap has provided Financial support/seed funding for the Astropy Learn project since 2020.

The Europlanet society has awarded funding for the Astropy Project through the Europlanet 2024 RI,

European Union's Horizon 2020 research and innovation programme, under grant agreement No 871149.

This funding is used in particular to support the ongoing work on planetary reference frames and