Jean-Paul Le Fvre CEA Saclay, Irfu France Adass XXIII September
2013, Waikoloa, Hawaii, USA The web app architecture The VHF
network The Svom mission The registration web site Contact:
[email protected] d db.sites.insert({ id: id(), name:
Saclay, }); db.users.insert({ id: id(), login: nabila, }); mongoose
var siteSchema = new app.mongoose.Schema({ name: {type: String,
required: true, unique: true}, }); var app = express(); var http =
require(http) app.use(app.router); app.use(express.static(
path.join(__dirname, 'client')));
http.createServer(app).listen(app.get('port'), function(){
logger.log('info', 'Svom on port %d', app.get('port')); }); Express
framework for NodeJs mocha Bootstrap Toolkit, css, html5 widgets
Bootswatch Themes Client-side framework Model View Controller The
server side The client side In the browser A 100% javascript web
application Unit testing the server Svom ( Space-based multi-band
astronomical Variable Objects Monitor ) is a Sino-French mission
dedicated to the detection, localization and study of GRB (Gamma
Ray Bursts) and other high-energy transient phenomena (X-ray
bursts, soft gamma repeaters, AGN (Active Galactic Nuclei),
novae...). The observations will follow three main stages: 1.
Detecting the gamma-ray bursts using space-based equipment capable
of providing their position in quasi real time with an accuracy of
a few arc minutes. 2. Observing the region of the burst as rapidly
as possible using small robot-controlled telescopes to detect
optical afterglow in the visible and near-infrared wavelengths and
to provide its position with an accuracy of one arc second. 3.
Detecting the spectrum of the optical afterglow in the visible and
near- infrared wavelengths as rapidly as possible using the largest
Earth-based telescopes. To achieve these scientific objectives, the
measurements strategy followed for the Svom mission makes the best
possible combined use of onboard and ground observations, requiring
quasi real time contact with the satellite. A collection of ground
stations, known as the VHF alert network, receives the information
concerning onboard detection and location of the burst and sends it
automatically to the FSC (French Science Centre) in the CEA at
Saclay. The data are processed by an automaton which alerts the
ground-based instruments of the Svom system as well as the
international community. Data about the location of a burst must be
conveyed to users in less than a minute in more than 85% of cases.
This scientific requirement implies that the satellite must be
almost permanently visible to at least one station. Considering the
satellites altitude (600 km) and orbital inclination of 30relative
to the equator, the VHF alert network requires about 40 stations.
The Svom VHF network svomtest.svom.fr a.k.a goo.gl/g8Ab0n VHF
receivers should be installed inside the strip 30latitude. About 40
locations should be found. We need help ! If you know a place where
it will be possible to set up a VHF station go visit the Svom
registration web site. We are seeking organizations, teams or
people willing to participate to our adventure.