ESO Fellowship Programme 2026–2027: Research and Observatory Fellowships in Germany and Chile

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ESO Fellowship Programme 2026–2027: Research and Observatory Fellowships in Germany and Chile

The European Southern Observatory (ESO) is recruiting early-career scientists for its 2026/2027 Fellowship Programme. The call offers fellowships at ESO Headquarters in Garching, Germany, and at the ESO astronomy centre in Santiago, Chile. Both tracks provide a setting for independent astrophysics research and close contact with major observatory facilities. They also include different forms of service, technical, or operational work, so applicants should choose a location based on the work they want to do as well as the research environment.

Applications are due by midnight Garching time on 15 October 2026. The official call states that incomplete or late applications will not be considered. Applicants should use ESO’s official templates for a motivation letter, research plan, and academic and research track record, upload those documents as PDFs, and provide contact details for three scientific referees. The recruitment page is the authoritative place to confirm the application form and any updates before submission.

Key details

What the fellowship offers

An ESO Fellowship is a fixed-term employment appointment rather than a small stand-alone project grant. The official recruitment notice describes a competitive salary and allowances, comprehensive social benefits, and financial support for relocating families. ESO’s conditions of employment describe healthcare and pension coverage, leave, and other family and relocation provisions. The exact remuneration depends on appointment conditions and personal circumstances; the current call does not give one universal cash award figure. Applicants should use ESO’s official conditions of employment and salary information, rather than third-party estimates, when comparing the package.

Fellows develop an independent scientific programme while joining a research community closely linked to observatory operations, instrumentation, and international astronomy. ESO says fellows may participate in scientific workshops, co-supervise doctoral students, coordinate thematic research groups, contribute to scientific committees, organise seminars, and prepare competitive grant and telescope proposals. ESO’s Offices for Science can fund international conferences, workshops, and research visits. Fellows may also compete internally for limited additional research funds. These opportunities are part of the working environment, not a guaranteed extra cash award attached to every appointment.

The distinctive value is the connection between a research agenda and the instruments, data, people, and operational realities of a major observatory. Applicants who want uninterrupted research time should study the functional assignments carefully. Applicants who want research linked to telescope operations, instrument work, observing, or technical expertise may find that structure a strong fit.

Choose between the Germany and Chile tracks

The Garching fellowship lasts three years. Fellows spend 25% of their time on functional work, receiving training in high-level technology or contributing to selected ESO projects proposed by different departments. The remaining time supports their research programme and participation in the scientific community. Garching’s location near Munich places ESO Headquarters alongside Technical University of Munich and several Max Planck institutes, creating opportunities for scientific exchange and collaboration.

The Chile fellowship lasts four years. During the first three years, fellows are assigned duties in a Paranal or ALMA Science Operations group. ESO describes these duties as corresponding to 80 nights per year, or about half of working time. The fourth year can be spent at an astronomy or astrophysics institute in an ESO member state or strategic partner Australia, at a Chilean institution, or at ESO in Santiago or Garching. No functional duties are required during that fourth year, although a fellow based at ESO Chile may request up to 25% functional work.

The Chile role varies with assignment. ALMA duties may involve observing, data processing and analysis, software testing, technical work in proposal review, or developing array capabilities. At Paranal, fellows can work as support astronomers, help visiting astronomers, carry out service-mode observations, and join an instrument operations team. This can build operational and interdisciplinary skills, but it is a substantial commitment that should shape the research plan from the outset.

The recruitment listing uses “Europe” for the Germany track. Do not assume that applicants can freely switch locations after selection or that all candidates are considered for both tracks. Review the vacancy options in the recruitment portal and follow the instructions associated with the specific position you intend to apply for.

Who is eligible and well positioned

The programme is open to applicants who will have obtained a PhD in astronomy, physics, or a related discipline before 1 November 2027. ESO welcomes early-career scientists in observational, theoretical, and computational astrophysics. The call does not give a narrower nationality bar: no nationality is in principle excluded from employment. It does state that recruitment preference may be given to nationals of ESO member states, host states, and strategic partners. This preference is not an absolute nationality restriction, but it is relevant context for international applicants.

Eligibility alone does not establish fit. A strong candidate should be able to explain the scientific question they will pursue, why that question matters, and why the ESO setting is the right place to carry it out. For Chile, the call specifically highlights broad scientific understanding beyond one’s own specialty, communication, independence, time management, and personal responsibility. Those traits are also sensible to demonstrate for either track because fellowship work combines research with participation in an organisation.

The research should be feasible within the appointment term and should explain any required data, facilities, or collaborations. A proposal that depends on access to a resource without explaining how access will be obtained may look fragile. A project can be ambitious, but it should make clear which results are realistic within three or four years and how the candidate would adapt if one component takes longer than expected.

What to submit

ESO’s application guidelines say the official templates are mandatory. The application consists of three documents, each uploaded as a PDF to the relevant vacancy:

1. Motivation letter. Explain the professional direction you want to take, why ESO is an appropriate next environment, and what you would contribute beyond the core research. The guidelines give a two-page limit and require at least 11-point font. The Europe track asks applicants to include names and email addresses for three referees in this document.
2. Research plan. Set out the question, scientific relevance, context, methods, feasibility, and expected contribution. The current guidelines specify a three-page limit including figures, with references excluded from that limit, and a minimum 11-point font. Explain required data or resources and how you will obtain them, along with reasonable contingencies.
3. Academic and Research Track Record (ARTR). Use the official form to present your research identity, outputs, experience, and engagement. ESO asks candidates to highlight up to three key achievements and explain their role and impact. Observing, computing, mentoring, community work, interdisciplinary experience, and career context can help reviewers understand a record that a publication count alone would not describe.

The call also requires the names and contact details of three people familiar with your scientific work and willing to recommend you. For Chile, applicants trigger invitations through the online form, and referees must submit by the 15 October deadline. For Europe, letters are requested only for applicants who advance after the initial research-plan review; candidates who progress should alert referees promptly because the letter deadline is 10 December. ESO’s guidelines note that some instructions visible in the recruitment portal may be outdated, including page limits. Use the current official application guidelines and the 2026 templates as the controlling instructions.

How selection works

The Europe and Chile tracks use different review sequences. For Europe, the first stage evaluates only the research plan through distributed peer review. It is designed to identify bold, original, scientifically sound work. This has a practical consequence: the research plan needs to stand on its own. Do not rely on the motivation letter or career record to supply context or proof that the proposal omitted. The plan should make its case clearly to reviewers who may not be specialists in the exact subfield.

Candidates who pass the Europe triage move to full-application review. The selection committee then considers the research plan, motivation letter, track record, and reference letters to assess whether the applicant can execute the project. Shortlisted candidates are invited to give an online science talk and attend a one-hour interview. The interview covers scientific vision, motivation, career goals, and interest in ESO.

For Chile, the selection committee reviews the complete application from the outset, including references. Shortlisted candidates are invited to a one-hour interview focused on scientific vision, career aims, and interest in ESO’s mission and work. Because the Chile process evaluates the full package early, make the relationship among the research plan, track record, motivation, and operations role especially clear.

Timeline and immediate next steps

The common deadline is 15 October 2026 at midnight in Garching. This is a strict deadline, and the official call says late or incomplete submissions will not be considered. The Chile track has the additional practical requirement that referee letters are due with the application. Start the reference process well before the closing date and confirm that each referee has received the invitation and understands the deadline.

For Europe, first-stage outcomes are expected in the second half of November. Candidates who advance should expect to ask referees to submit by 10 December. Shortlisted interview candidates are expected to be contacted in December, with the interview week scheduled for 12–22 January 2027. Offers are expected at the end of January, with a 15 February 2027 acceptance deadline.

For Chile, applications are reviewed in October and November. Shortlisted applicants are expected to be invited to video interviews in December, with interviews in early January 2027. Offers are expected at the end of January, with acceptance by 15 February. These are the schedule published for this recruitment; check the official vacancy for changes.

Before drafting, download the three current templates and confirm that you meet the degree date requirement. Decide whether your proposed programme fits the Europe or Chile role, then register in the online recruitment service early enough to resolve account or upload issues. Ask referees before the last week. Finally, check that the vacancy contains all completed fields and required PDFs well ahead of the deadline. The official guidelines explicitly encourage early registration.

Preparation strategy for a stronger application

Build the research plan around a small number of connected questions. State the problem in plain language, establish what is not yet known, and identify the evidence or observations that could answer it. Then connect methods to each question. A list of techniques is not a research strategy unless a reviewer can see what each technique will establish and what result would change the interpretation.

Show intellectual ownership. ESO’s criteria ask whether the applicant understands the subject deeply and whether prior work has led to the proposal. Describe the contribution you personally made to past projects and how those findings create the next question. Use the track-record form to contextualise selected achievements, not merely to repeat a CV. If your path includes career breaks or a non-linear trajectory, ESO says you may explain relevant context; this is optional, and the aim is to help reviewers understand your trajectory rather than disclose more than is useful.

Make the fit concrete. Refer to the facilities, scientific environment, or functional work that your project actually needs. For the Chile option, be direct about how operational duties can complement your science and how you will protect research progress while meeting the observing commitment. For Garching, describe how your programme relates to a research and technical environment in which functional work occupies one quarter of the appointment. Avoid generic praise of ESO that could be pasted into any astronomy application.

Use a feasibility check. Map the project’s major steps to the fellowship duration, note dependencies such as data access or instrument schedules, and identify a fallback if an observation or analysis path fails. The official guidelines specifically ask applicants to explain required resources and contingency plans. A realistic plan with a clear scientific payoff is more persuasive than a large catalogue of loosely connected aims.

Common mistakes to avoid

• Using an outdated page limit. ESO warns that the portal may display old instructions. Follow the current guidelines and current application templates.
• Submitting a research plan that depends on other documents. This is especially risky for the Europe track, where only the plan is reviewed during the first stage.
• Treating the Chile operations duty as incidental. The first three years include substantial operational work. Show that you understand and want the role.
• Waiting to contact referees. Chile references must arrive by 15 October. Europe candidates who advance have a later deadline but should give referees notice as soon as they learn they passed triage.
• Leaving fit implicit. Reviewers need to understand why ESO, why this track, and why the proposed work belongs in this environment.
• Overloading the plan. Several complementary objectives can work, but a plan without priorities, sequence, or contingency is difficult to judge for feasibility.
• Assuming the fellowship has a single published award amount. ESO describes remuneration and benefits but does not list one amount on this call. Use official employment terms for individual estimates.
• Uploading incomplete or incorrectly formatted files. Use required templates, complete the relevant fields, export PDFs, and confirm every document is attached to the correct vacancy.

Frequently asked questions

Is this a grant or a salaried postdoctoral fellowship?

It is a fixed-term fellowship appointment with a salary and benefits. ESO lists a competitive remuneration package, allowances, and social benefits, but the recruitment page does not publish one universal salary figure.

Can a researcher from outside ESO member countries apply?

Yes. ESO says no nationality is in principle excluded. It also says recruitment preference may be given to nationals of member states, host states, and strategic partners. Applicants should distinguish this preference from a formal eligibility exclusion.

Do applicants need the PhD at the time of application?

The call says applicants must have obtained their PhD before 1 November 2027. Candidates who expect to finish before that date should ensure their completion timeline is realistic and follow the application form’s instructions for degree status.

Are recommendation letters required by the same date for both locations?

No. For Chile, referees are invited through the application and their letters are due by 15 October 2026. For Europe, letters are requested only after the first-stage selection, with a stated deadline of 10 December for candidates who advance.

Can I apply with theoretical or computational work?

Yes. ESO explicitly welcomes observational, theoretical, and computational astrophysics. The important question is whether the proposed work is scientifically strong, feasible, and connected to the ESO setting and the selected track.

Where can I verify instructions and submit?

Use the official ESO recruitment notice to access the application and the official application guidelines for current forms, limits, and review criteria. For remuneration and employment terms, consult ESO’s conditions for Fellows.

Official links

• 2026/2027 ESO Fellowship recruitment notice and application
• ESO Fellowship application guidelines and templates
• ESO conditions of employment for Fellows

Treat the recruitment notice and current guidelines as authoritative if details change. As the closing date is close, prospective applicants should verify the deadline, location-specific instructions, and status of all documents directly in ESO’s recruitment portal before submitting.