4th Netherlands ALMA Science Day: January 25, 2021

Allegro announces the 4th Netherlands ALMA Science Day, which will be held (online) on Monday, January 25, 2021. At this meeting, we will hear presentations of the latest scientific results obtained with ALMA by the Netherlands astronomical community. Special guest speakers include Rychard Bouwens (Leiden Observatory, on the REBELS Large Program), and Leen Decin (Leuven, on the Atomium Large Program – to be confirmed). We will also hear the latest updates on the status of ALMA and its return to science operations, and allow time to discuss user experiences and other ALMA related topics.

Following the Science Day, on Tuesday, January 26, 2021, introductory CASA training will be offered, again online. Throughout the remainder of that same week, Allegro staff will be available to (remotely) work with you on exploring the capabilities of CASA on the Allegro computing system.

To attend the event, please fill in this registration form. Contributed talks will be 15-20 minutes long and will showcase recent ALMA results from the Netherlands astronomical community.

Important dates:
– December 21, 2020: Deadline for registering to present a talk and registering to attend the CASA training.
– January 17, 2021: Deadline for registering to attend the Science Day talks.

Registered participants: (Last update 16-11-2020)

Michiel Hogerheijde Leiden Observatory
Violette Impellizzeri Leiden Observatory
Leen Decin KU Leuven
Rychard Bouwens Leiden Observatory
Aida Ahmadi Leiden Observatory
Alex Hygate Leiden Observatory
Andrés Pérez-Sánchez Leiden Observatory
Ashley Bemis Leiden Observatory
Katharina Immer Leiden Observatory

ALMA Training Sessions

The European ARC Network is offering a series of online topical training sessions focused on the analysis of ALMA and interferometric data in general. The sessions will cover a wide range of topics of interest to the ALMA user community with the aim to help users gain expertise in working with interferometric data. Each training session will be one hour long and will include a live demo and an interactive Q&A section.

The following is a list of training sessions currently being offered. We will update this page as more sessions are offered. Click on each topic for more information about how to participate.

  1. Imaging with the ALMA Pipeline (December 4, 2020 – 11:00 CET)
  2. ALMA Science Archive update and ARI-L (December 15, 2020 – 11:00 CET)
  3. UVMultiFit: a versatile library for fitting models directly to visibility data (January 15, 2021 – 11:00 CET)


New Allegro Program Manager: Violette Impellizzeri

We are excited to announce that Violette Impellizzeri has joined Allegro as our program manager!

Violette received her PhD in 2008 at the Max Planck Institute for Radioastronomie in Bonn, on the topic of “molecular tori in the core of AGN”. After her PhD, she moved as a postdoc to NRAO, in Charlottesville, to work on the Megamaser Cosmology Project. It was during this time that the ALMA telescope began construction, and as NRAO was one of the ALMA partners, she soon became excited at the idea of being part of such an important project and furthering her interferometry interests. For this reason, in 2011 she moved to the Joint ALMA Observatory (JAO) in Chile as a commissioning postdoc and science fellow; during commissioning she also worked on early VLBI testing, science verification, and high frequency observing techniques. In 2014, once operations began, she was hired as an operations astronomer taking on new tasks such as the Phase II Group (P2G) Lead, ‘friend of VLBI’ and Proposal Handling Team (PHT) lead. On October 1st, she joined the Allegro ARC Node in Leiden, taking on the role of Program Manager, and is very excited to be returning to Europe and connecting with the Allegro team and the ALMA scientific community in The Netherlands.

We look forward to working with Violette and wish her all the best.

European ALMA Regional Centre Community Assembly

The European ALMA Regional Centre invites all European ALMA users to a short virtual community assembly on October 8 at 10:00 CEST. After a long period of suspended science observing, there is now a path towards getting back on sky and collecting science data with ALMA again. At this community meeting, we will update you on the timeline for recovery and can answer any questions you may have on your ALMA projects and support from the European ARC network.

Reserve the date: 8 October at 10:00 CEST. The meeting can be accessed at this link.

Don’t hesitate to e-mail Allegro in case of questions, comments, or concerns. Looking forward to seeing you then!

ALMA starts the process of recovering the telescope array

Due to the global coronavirus pandemic, almost the whole ALMA site has been shut down for the past six months. With the improving pandemic situation in Chile, ALMA is now scheduled to begin the long process of recovering the telescope array on October 1st, 2020. The road to recovery of operations, and ultimately science observations – a milestone that will not take place this year – has been carefully planned and more details can be found here.

The current restart plan requires about 80 days to reach the antenna power-up milestone, assuming there are no major repairs needed, or changes in the schedule due to impacts of the pandemic. The time needed to recover sufficient antennas for science observations is highly uncertain. Nevertheless, the aim is to have antennas collecting data and verifying the observing systems after approximately 100 days – whether this is a handful, or many antennas, remains difficult to predict. This implies that January is the earliest there may be enough functional antennas and cooled receivers to attempt the first science observations.

Status updates will continue to be provided at least monthly on the Science Portal, as the recovery of operations progresses. Specific capabilities and potential science observing dates will be identified after the status of antennas and other critical systems is better understood.

As always, the ALMA Regional Centres continue to provide support to their respective communities. At Allegro, we continue to actively provide support to our users. Don’t hesitate to e-mail us in case of questions, comments, or concerns.

Status update for the ALMA telescope

Dear colleagues,

The COVID-19 pandemic still continues to impact our lives in many ways around the world. The situation in Chile has slightly improved in the Santiago area but not yet improved in the northern area where the ALMA telescope is located. ALMA operations thus remain suspended and the timeline of resuming observations unfortunately remains uncertain. Detailed plans for the safe return to operations have been developed and regular reviews to consider starting the re-opening process of the Observatory have now started. ALMA is currently still in the Caretaker phase with small teams maintaining the safety of the ALMA equipment and infrastructure. As always, the top priority is the health and safety of all our staff.

The ALMA Regional Centers (ARCs) continue to provide support for PIs and users of archival data. The ARCs in particular assist the reduction and analysis of existing data through virtual face-to-face (f2f) support in addition to usual Helpdesk interactions. If you have any questions, want to sign up for a virtual f2f visit, or have comments or concerns related to the situation at ALMA, please contact the ALMA Helpdesk at https://help.almascience.org.

Allegro continues to actively provide support to our users. Don’t hesitate to e-mail us in case of questions or concerns.

Status update for ALMA Cycles 7 & 8

The ALMA Director, with support from all Executives and the ALMA Board, has taken the following recent decisions regarding the status of Cycle 7 and Cycle 8:

  • The start of ALMA Cycle 8 has been postponed until 2021 October. It is anticipated that the Cycle 8 Call for Proposals will open again in 2021 March.
  • ALMA Cycle 7 will continue through 2021 September, with currently non-completed projects ranked A, B and C remaining in the observing queue.

There remain many questions outstanding regarding resuming observations and accepting future proposals during these uncertain times.  ALMA is working on these questions and will provide a next update to the community in the coming weeks.

Allegro continues to actively provide support to our users. Don’t hesitate to e-mail us in case of questions or concerns.

Suspension of ALMA Cycle 8 Call for Proposals

The COVID-19 crisis has continued to affect the global community, including ALMA users and staff. ALMA operations remain suspended, as announced on March 20. Under these difficult and unprecedented circumstances, the ALMA Director, with support from all Executives, has decided to suspend the submission of Cycle 8 proposals until further notice. The Cycle 8 proposal submission server will be closed as of 15:00UT on Friday, 17 April, 2020.

ALMA Executives appreciate the community has worked hard on new science ideas for Cycle 8, even under such difficult conditions. They also realize the work the community has done in generating an exciting Cycle 7 observing program. At this time, the first priority is the health and well-being of the global community. New timelines for Cycle 7 and Cycle 8 will be announced on the Science Portal in the coming weeks as the global situation evolves.

Allegro continues to actively provide support to our users. Don’t hesitate to e-mail us in case of questions or concerns.

Extension of Proprietary Times

Due to the COVID-19 crisis and its impact on the global astronomical community, the ALMA Director has made the following decision regarding proprietary times of ALMA data sets.

The proprietary period of all MOUSs that have been delivered to principle investigators (PIs), but have not become public by 19 March 2020, will be extended by three months. This implies that the proprietary period of all these ALMA data will effectively be set to 15 months, or nine months for DDT projects. 19 March was the last day that ALMA was observing before Cycle 7 observations were suspended.

For data sets that already reached the end of the proprietary time between March 19 and today, the proprietary time will be reinstated and extended for an additional 3 months. Please be aware that ALMA cannot guarantee that these data sets have not already been downloaded by archive users.

PIs of data sets that do not fall in the category defined above, who feel that their ability to work on their data within the regular proprietary period is impacted by the COVID-19 crisis, are requested to submit a ticket to the “Proprietary Period Extension Requests” Department of the ALMA Helpdesk. ALMA will handle these requests in a fair and lenient manner as we are committed to support our users as much as possible during this stressful time.

Updates on this policy may be posted on the Science Portal in the future.

Don’t hesitate to e-mail Allegro in case of questions or concerns.

ALMA Proposal Preparation Day (online material)

IMPORTANT UPDATE: The ALMA Director, along with the regional partners, have decided to delay the proposal deadline for the ALMA Cycle 8 Call for Proposals to NO EARLIER than 15 UT on 19 May, 2020. Therefore, Allegro has decided to postpone the Proposal Preparation Workshop of March 26 to a later date, approximately 3 weeks before the actual deadline (when this is decided).

For those who want to get started on their ALMA proposal still on the original schedule, we are providing a series of pre-recorded presentations:

which can be found below or on our YouTube channel.

Everyone is encouraged to e-mail Allegro with any questions that they may have after watching these presentations. We will answer all questions, either by e-mail or via an online session, and also collect Frequently Asked Questions in a constantly updated document. For your convenience, we have also created a toolbox with useful links to help you prepare your proposal.

We would like to highlight the possibility to submit Large Programs on both the main array (>50 hours) and ACA stand-alone (>150 hours). PIs who are considering a Large Program are encouraged to contact Allegro early to optimize your program and explore the many ways we can support your project.


 1. Welcome & ALMA Cycle 8 Capabilities (pdf file)

 2. Dual-Anonymous Proposal Review (pdf file)

 3. ALMA Observing Tool

Part 1/4: Introduction – download & installation (0:32), create a new proposal (3:13),
proposal information (4:50), proposal types (10:50)

Part 2/4: Science Goal Generation – general (2:30), field setup (3:30)

Part 3/4: Spectral Setup – continuum setup (1:30), spectral line setup (7:40)

Part 4/4: Calibration & Performance – synthesized beam (1:00), bandwidth for sensitivity (8:50),
technical justification (12:25), proposal summary (15:00), validation (19:30)

 4. Simulating ALMA Observations (pdf file)

Please don’t hesitate to e-mail us if you have questions, concerns, or need support. We would be happy to set up a remote meeting with you via a video link or other remote means.


You can register for the Proposal Preparation Day at the following link.

Name Institution
Michiel Hogerheijde Leiden Observatory
Alvaro Hacar Leiden Observatory
Andres Perez-Sanchez Leiden Observatory
Aida Ahmadi Leiden Observatory
Alex Hygate Leiden Observatory
Lizette Guzman Leiden Observatory
Christian Ginski University of Amsterdam
Umit Kavak SRON/Kapteyn Astronomical Institute
Sarah K Leslie Leiden Observatory
Kimberly Emig Leiden Observatory
Pooneh Nazari Leiden Observatory
Marta Frias Castillo Leiden Observatory
Leon Trapman Leiden Observatory
Benoit Tabone Leiden Observatory
Alice Booth Leiden Observatory
Robin Mentel Leiden Observatory
Jozsef Varga Leiden Observatory
Katharina Immer JIVE
Margot Leemker Leiden Observatory
Anna Bartkiewicz Nicolaus Copernicus University
Abigail Frost KU Leuven
Daniel Harsono ASIAA
Sofia Rojas MPIA
Helga Denes ASTRON