Web Interface for Star Databases of the „Pi of the Sky” Experiment Marek Biskup Warsaw...
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Transcript of Web Interface for Star Databases of the „Pi of the Sky” Experiment Marek Biskup Warsaw...
Web Interface for Star Databases
of the „Pi of the Sky” Experiment
Marek BiskupWarsaw University
On behalf of the „Pi of the Sky” collaboration
Wilga, 2007-05-24 Marek Biskup, Pi Stars Web Interface2
Outline
Star data Interface
Star search Lightcurve view
Summary
Wilga, 2007-05-24 Marek Biskup, Pi Stars Web Interface3
„Pi” Stars
The database „Pi 2004-2005” 11 months of operation 2 cameras ~2 million stars per camera ~200 observations per star => Almost 1 billion of records
(almost 200GB)
Online databases for ongoing observations
Implementation in PostgreSQL
Wilga, 2007-05-24 Marek Biskup, Pi Stars Web Interface4
Other Catalogs Asas – star variability survey Gcvs – variable stars catalogue Tycho – nearly all stars up to 11m
All fits in the same database schema
Wilga, 2007-05-24 Marek Biskup, Pi Stars Web Interface5
Database Schema
Measurements information Additional information about frames, external stars, etc
Star
PK id
ra dec magnitude cam_id ...
Superstar
PK id
name ra dec tycho_id star_class ...
Measurement
time ra dec magnitude ccdx ccdy ...
Wilga, 2007-05-24 Marek Biskup, Pi Stars Web Interface6
Web interface
Modern technologies Php Javascript CSS Smarty DHTML AJAX
Configurable Adaptable for other catalogs
(Tycho, ASAS, GCVS)
Wilga, 2007-05-24 Marek Biskup, Pi Stars Web Interface7
Search form
Change database
Wilga, 2007-05-24 Marek Biskup, Pi Stars Web Interface8
Advanced search
Variability Types
Wilga, 2007-05-24 Marek Biskup, Pi Stars Web Interface9
Search results (1)
Wilga, 2007-05-24 Marek Biskup, Pi Stars Web Interface10
Search results (2)
Limited number of stars per plot
Wilga, 2007-05-24 Marek Biskup, Pi Stars Web Interface11
Interactive searching
Mouse-drawn rectangle
Click on a star to see its light curve
Wilga, 2007-05-24 Marek Biskup, Pi Stars Web Interface12
Light curve viewThe
lightcurveStar’s
properties
Lightcurve form
Advanced properties
Wilga, 2007-05-24 Marek Biskup, Pi Stars Web Interface13
Light curve Different colors mark
different fields of observation
Small dots mark points from the other camera
Other camera
Wilga, 2007-05-24 Marek Biskup, Pi Stars Web Interface14
Interactive light-curvingMouse-drawn
rectangle
Click
Observation properties
Wilga, 2007-05-24 Marek Biskup, Pi Stars Web Interface15
Lightcurve form AJAX-like picture fetching Bookmarking support Data exporting
CVS HTML table ROOT macro
Bad measurement elimination
Field selection
Wilga, 2007-05-24 Marek Biskup, Pi Stars Web Interface16
Switching between star databases
Direct – from the search form
From a light curve view Search by coordinates
(2’ around) Direct link to the same star
in other catalogs
Advanced star’s properties
Wilga, 2007-05-24 Marek Biskup, Pi Stars Web Interface17
Summary
Pi of the Sky has a large Star Database, which will be published soon
Existing star databases are wrapped with the same interface
Star data from all the catalogs can be easily browsed