We are excited to announce Astro-COLIBRI v2.20.0, which introduces several brand-new features, a cleaner interface, and important performance and usability improvements. This update is based on the feedback we’ve received from the community and is aimed at making your experience smoother and more flexible.
1. New Search Button 
A prominent search button has been added to the top navigation bar of the web interface. You can now quickly locate specific transients or catalog sources. The autcompletion feature helps you to quickly find what you are looking for.
2. Landscape Mode 
The mobile interface has been optimized for landscape orientation on smartphones and tablets, ensuring a more consistent layout across different screen sizes and increase use-cases.
3. Light vs. Science Mode
Central Toggle 
: A new switch in the top row of the web interface lets you quickly shift between “light” and “science” modes. The new Light Mode displays essential information with fewer technical details, making it perfect for quick overviews, easier onboarding or public outreach. The Science Mode retains all previous advanced data fields, parameter settings, and in-depth catalogs, suitable for research-focused use-cases.
4. Watchlist 
The event watchlist allows for Persistent Event Tracking: logged-in users can now add specific events to a personal list of events. Simply click or tap on the new + button shown in the list of the events. Selected events will appear in the skymap and the latest transients list, regardless of your filters or chosen time window.
5. TeVCat and 4FGL Catalog Improvements
Additional Parameters: We’ve added extra details for all TeVCat and 4FGL sources, giving you deeper insights into known gamma-ray sources.
• New Catalog Filters: Narrow down sources based on event types, variability, flux, and other custom criteria, thus faciliating catalog exploration.
Minor Changes and Improvements
As usual, we implemented an array of additional features, minor corrections and improvements. The main ones are:
- Default Time Period: The default time window for displayed events is now 7 days (it can be changed in the user settings for registered users).
- Event Count Display: Following a request by @jean.paul.astro (cf. Count of events in the filtered request), the total number of currently displayed events appears at the bottom of the event list, helping you track how many transients match your filters.
- New event parameter: A new image_urls dictionary has been added to the internal data format for transient events. It allows to provide links to additional figures for selected events. This makes it easier to locate any extra visual data or reference images.
- Additional Figures for Neutrino Alerts and IceCat-1: A first example for new figures is a representation that has been added to all neutrino alerts and IceCat-1 catalog entries. This allows to put each event into the context of the broader event population and thus facilitates follow-up decisions.
- Distance Filter for Gravitational Wave Events: you can now filter GW events by their estimated distance, improving your ability to focus on those of greatest interest or within a certain proximity.
- Confirmation Checks: before submitting events to the RAPAS or BHTOM networks, you’ll see an additional confirmation step, preventing accidental submissions.
- TNS v2.0 Adaptation: We have updated the system to be fully compatible with the TNS v2.0 release, ensuring continued accuracy in transient alerts and classifications.
- Tilepy Integration Updated to v2.5.0: This update brings performance and feature improvements to our tiling utilities used to facilitate follow-up observations of gravitational waves.
Getting Started & Feedback
• How to Update:
- If you are using the web interface, the update is applied automatically. Simply refresh your page or clear your browser cache if you have any display issues.
- The updated mobile apps are available in the Android and iOS app stores. Switch on automatic updates to never miss out on new features.
• Feedback & Support:
We value your input! If you encounter any issues or have suggestions on how to improve Astro-COLIBRI, please post them here on our forum or reach out by email – our team is happy to help!
Thank you for your continued support, and we hope you enjoy these improvements in Astro-COLIBRI v2.20.0. Happy exploring! 
Your Astro-COLIBRI Team
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