SOLARNET is pleased to announce a call for proposals of its Access Programme for the Solar telescopes GREGOR, SST and THEMIS

Period: 2023A Proposal Submission Deadline: 20 January 2023, 11:00 UT
Send proposals to:

Proposals are hereby invited under the SOLARNET Trans-National Access Programme for observing time at the solar telescopes GREGOR (Tenerife), SST (La Palma) and THEMIS (Tenerife).  This call also includes observing time in the International Time Program (ITP) for GREGOR and THEMIS.

This call is made possible because of an extension of the SOLARNET project period. SST Access is at the moment contingent on a budget analysis within the SOLARNET project.

Proposals will be handled by the EAST TAC, a common European time allocation committee installed by the European Association for Solar Telescopes. Typically, successful proposals in PI visitor mode will be awarded with around 10 observing days. SOLARNET campaigns also get travel grants for two visiting researchers going to the telescope.

Under SOLARNET, SST will also provide users with reduced data for selected data sets. Note that this resource is limited so the selection must be carefully made.

This call is for April-September 2023 for SST and THEMIS and for April-August for GREGOR. We expect an additional call later in 2023 for GREGOR.

New users of the facilities are encouraged to apply. Certain criteria of eligibility related to the nationalities of the applicants exist and are different for each telescope:

For SOLARNET time, the PI and at least half the Co-I’s must have affiliations other than Germany (for GREGOR), Sweden (for SST), France (for THEMIS) or Spain (for all three telescopes).  Otherwise this call is open to the world, making use of an option in the rules for Access programmes that allow a quota for non-EU and non-associated countries.

For ITP time (THEMIS only), applications must include researchers with affiliations in at least two of the following countries: Spain, UK, Germany, France, Italy, Finland and Belgium.

Data acquired in the SOLARNET Access Programme will become public one year after being delivered to the PI.

Information on the telescopes and their instrumentation can be found at the telescope web pages:

GREGOR Instruments Leibniz-Institut fuer Sonnenphysik (KIS): Scientific instruments (
GREGOR Other information Leibniz-Institut fuer Sonnenphysik (KIS): Observations with GREGOR (
SST Information for SOLARNET Access applicants
SST Observations setup 2023
THEMIS 2023 observing time information
THEMIS User information

A proposal consists of a SOLARNET form plus forms that are different for each telescope.

Please download the forms here: Download file

Proposals can be made for each individual telescope or for a combination of them.
All proposals should be sent via email to and must be received by 11:00 UT on 20 January 2023.

SOLARNET is funded by the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 824135.