IAU Symposium 355 aims to survey the denizens of the low surface brightness skies, at all wavelengths and resolutions, to show the richness of physical processes taking place in this regime, which has not been fully explored. From the Zodiacal light in the Solar System all the way to the cosmological backgrounds, and from the contributions of amateurs to space-based instrumentation, this Symposium will provide participants with a broad glimpse of one of the few last niches that remain to be discovered.




Rule about poster size to exhibit during the symposium: the poster size is basically A0, the useful area on the poster boards is 96 x 96 cm. but there is nothing below that board area so if a poster is longer it will just free-float below the board.

1. The scientific programme and the book with talk and poster  abstracts are now available. The website also contains all relevant logistical information, including on travel and accommodation. Instructions about how to get a WI-FI connection during the conference can be found in that link.

2. If you have not done so yet, please finalise your registration now by paying your registration fee by June 15th.

3. The welcome reception, conference dinner, and excursion to the Teide Observatory on Tenerife are all included in the registration fee. Information on the optional excursion to the Observatory on La Palma, scheduled for Saturday July 13th,  with information on how to sign up and pay for this excursion is here. The deadline for expressing your interest is also June 15th.

The La Palma excursion will take a full day and involves flying to the island to La Palma, with the return flight scheduled to arrive back in TFN airport at 1930. The cost includes the flights, bus transport on La Palma, a coffee break on arrival and lunch. We aim to visit several telescopes including the 10m GTC.

4. If you have not yet made your accommodation and flight reservations, we urge you to visit http://research.iac.es/congreso/iaus355/pages/accommodation-and-flights.php and contact the conference office who can assist you.

5. Following the rules of the IAU, the proceedings of the conference will be published by Cambridge University Press within 6 months. Given the production times, and to ensure a timely submission to CUP, the deadline for submitting your written contribution is September 8th. Indicative page limits are 15 pages for reviews, 10 pages for invited talks, 6 pages for talks and 4 pages for posters, but contact the Editors should you need more. The cost of an electronic copy is included in the registration fee. Hard copies can be purchased at at additional cost through the registration webpages. The IAU/CUP LaTeX macros and example files are available here.


The first and second announcements published here


Ethics and Anti-harassment statement


The organisers consider this IAU Symposium to be a privileged occasion for free and frank interchange of scientific ideas, as well as for the nurturing and creation of professional and social contacts. Any abuse of power or inappropriate behaviour has no place at IAU Symposium 355.

We specifically refer to the IAU anti-harassment policy and the  EAS Ethics Statement and Guidelines for Good Practice. These will apply during IAU Symposium 355. By registering for this conference, all participants confirm that they have read the documents and that they will follow its recommendations.