## Videos ### Finding Alerts is like Buying a House This tongue-in-cheek video explains the Lasair filter by analogy with the rapidnotifications available at a property website. ### Lasair introduction and object page The front page of Lasair, and all the goodies to be found on the page of a specific astronomical object. ### How to get a Lasair account You just need a working email to get an account. Then you can create and save filters, watchlists, watchmaps, and run real-time streaming from your filter. ### How to make a filter for Lasair alerts How to write a filter in a SQL-like language with SELECT and WHERE. You can also include watchlists (find alerts that happened at one of my sources), watchmaps (alerts withing a special area of the sky), and annotations (alerts that an external annotator has flagged). ### How to make a watchlist for Lasair A watchlist is a set of special places in the sky -- my favourite sources. This video is how to create a watchlist from a file of simple format (RA, Dec, Name), how to make that file from [Vizier](https://vizier.cds.unistra.fr/viz-bin/VizieR). Once you have a watchlist, you can use it in a Lasair filter to select alerts from your favourite sources. ### How to make a watchmap for Lasair A watchmap is an area of the sky defined by a [MOC](https://cds-astro.github.io/mocpy/). This video shows how to create a watchmap from such a file, and how to build the file. Once you have a watchmap, you can use it in a Lasair filter to select alerts from your favourite area of the sky. ### Topic and GroupID for a Lasair Kafka Stream You can have results of a filter delivered in near-real-time to your machine. This video explains two important concepts: Topic and GroupId ### The Lasair Marshall Notebook You can browse the output of a filter with the Lasair Marshall Notebook. This video shows how it works.