Following the Agreement between IAC and NOTSA for the continued operation of the Nordic Optical Telescope (NOT), 5% of the observing time at NOT is offered for joint IAC-Nordic research programs: this is known as the IAC-Nordic Observing Time. This observing time is aimed at reinforcing the collaboration and synergies between the IAC and the […]

GTC announces the special call for proposals for observing time with CIRCE in polarimetric mode corresponding to semester 2017A. All potential applicants are recommended to read the full announcement that is available here. Proposals requesting CIRCE polarization data are due on April 3, 2017, at 17 h Canarian time (18 h CET).  Semester 2017A runs from March […]

CAT 2026B President: Giuseppina Battaglia (IAC) Vice-president: Ignacio Martín Navarro (IAC) A) Panel I: Galaxies & Cosmology (GACOS) Comissioner: Omaira González (UNAM) Vice-commissioner: Josefa Becerra (IAC) Members: María Isabel Pérez Martín (UGR)   Kazushi Iwasawa (UB)   José Pérez Martínez (IAC) B) Panel II; The Galaxy & Stars (GAES) Commissioner: Francisco Nogueras Lara (ESO) Vice-commissioner: Emma Fernández Alvar […]

This policy, starting in January 2017, refers to GTC Target of Opportunity (ToO) programs approved by the Spanish Time Allocation Committee (CAT). A ToO request (or trigger) may be activated only when the available equipment, instrumental configuration, and moonlight conditions are consistent with the CAT recommendations. ToO observations will be always executed by experienced GTC […]

The Spanish Time Allocation Committee (CAT) for night facilities issues a special call for proposals to use any of the two instruments of the STELLA robotic telescope during semester 2017A. The deadline for the submission of proposals is Thursday, 15 December 2016, at 17 h Canarian local time.  We recall that every proposal within the Spanish […]

Standard call for proposals – Semester 2026B (closed) Standard call for proposals – Semester 2026A (closed) Standard call for proposals – Semester 2025B: (closed) Standard call for proposals – Semester 2025A: (closed) Standard call for proposals – Semester 2024B (closed) Standard call for proposals – Semester 2024A   (closed) Special call for GTC, INT, Mercator, and Stella proposals – […]

Following the Agreement between IAC and NOTSA for the continued operation of the Nordic Optical Telescope (NOT), 5% of the observing time at NOT is offered for joint IAC-Nordic research programs: this is known as the IAC-Nordic Observing Time. This observing time is aimed at reinforcing the collaboration and synergies between the IAC and the […]

There are different schemes for proposals as indicated below: The standard call for proposals: Telescope time for GTC, WHT, INT, TNG, NOT, Mercator, and Liverpool on La Palma and Stella on Tenerife is allocated twice a year in periods of 6 months. Regular and large proposals are accepted according to the conditions described in the standard […]

13th of March 2026 NOT and TNG: Changes in Service Time and Introduction of a Fast Track channel from 2026B Starting from 2026B, there will be the introduction of a Fast Track scheme on NOT and TNG, which will also imply some changes to the previous Service time scheme on these facilities. Proposals requesting less […]