The Second VOEvent Workshop

December 5 and 6, Tucson, Arizona

Tycho's Stella Nova


VOEvent is the emerging International Virtual Observatory standard for distributing timely notifications of transient celestial events. The VOEvent specification provides a method for alerting subscribers to celestial phenomena in need of rapid, often automatic, observational follow-up. The IVOA VOEvent working group is responsible for continuing to develop the specification and for motivating the development of conforming systems, interoperable with each other and with prior community resources.

A common vision for VOEvent was forged at the first VOEvent workshop at Caltech in April 2005. The fruits of that workshop included v1.0 of the VOEvent XML specification, as well as example packets and a schema for validating those packets. Initial transport prototypes have been designed and deployed, and as a result actual event streams from such phenomena as gamma ray bursts are being captured as conforming VOEvent packets.

At the second VOEvent workshop, we hope to continue rapid progress on resolving thorny technical issues such as the proper semantics for specifying astronomical space-time coordinates or for specifying the classification of astronomical objects and processes. In addition, renewed attention will be directed to understanding the science drivers common to all time domain astronomy. VOEvent does not exist in a vacuum, and seeks to both benefit from, and provide evolutionary benefit to, prior astronomical transient event alert systems.


Please contact Rob Seaman ( as soon as convenient.


National Optical Astronomy Observatory (NOAO)
950 N Cherry Ave.
Tucson, AZ 85719

Or: Take the only exit out of the airport and go straight until you turn right on Kino Parkway; remain on Kino for several miles until you turn left into the main entrance of the University of Arizona; turn right on Cherry and right again into the NOAO visitors parking lot.

The sessions will take place in the Main Conference Room.


There is a list of Tucson hotels on the Univ. of Arizona visitor web pages. Click here for Tucson Hotels. The Four Points Sheraton is the absolutely closest hotel, but the University Marriott is better located with respect to restaurants and shops.

There are many unique things to do while in Tucson.




Some highlighted topics

  • What can VOEvent offer current telegrams? (CBAT, MPC, ATEL)
  • Interoperability with GCN including eStar & Raptor

  • LSST science operations
  • Gemini rapid response queue
  • UKIRT GRB observations & WFCAM alerts
  • SNe alerts from NOAO Supermacho and Essence surveys

  • Transport architecture (publishers, registries, IDs)
  • VOConcepts - namespaces for UCDs
  • STC/Lite (VO Space-Time Coordinates)
  • Alert authentication via embedded digital signatures

  • VOEvent-Net project
  • NVO Summer School VOEvent Demo

  • Contact with suggestions or if you wish to make a presentation.


  • Monday and Tuesday, Dec 5-6, will consist of presentations, discussions, resolution of action items, etc., pertinent to all who are interested in sky transient astronomy.
  • Wednesday, Dec 7, a small group of projects actively planning prototype VOEvent alert networks will hold a mini-interop session. Contact if you are interested in participating in Wednesday's session.


Monday, December 5

Tuesday, December 6

  • CBAT/MPC - Dan Green (see below)

Workshop Summary

* VOEvent mailing list archive

Links to IAU naming and alert centers

Minor Planet Center

Central Bureau for Astronomical Telegrams

International Comet Quarterly

LSST       NOAO       NVO

Workshop photo | Workshop photo (bigger) | Workshop photo (biggest)

Workshop photo #2 | Workshop photo #2 (bigger) | Workshop photo #2 (biggest)

Topic attachments
I Attachment History Action Size Date Who Comment
PowerPointppt AllsmanVOEventTalkDec05.ppt r1 manage 105.0 K 2005-12-06 - 15:27 RobSeaman LSST & VOEvent - Robyn Allsman
PNGtif CRW_7301Large.tif r1 manage 11932.4 K 2005-12-06 - 18:06 RobSeaman Workshop photo (biggest)
PNGtif CRW_7301Medium.tif r1 manage 3350.5 K 2005-12-06 - 17:53 RobSeaman Workshop photo (bigger)
PNGtif CRW_7301Small.tif r1 manage 545.8 K 2005-12-06 - 17:52 RobSeaman Workshop photo
PNGtif CRW_7302Large.tif r1 manage 11820.9 K 2005-12-06 - 18:13 RobSeaman Workshop photo #2 (biggest)
PNGtif CRW_7302Medium.tif r1 manage 3312.1 K 2005-12-06 - 18:12 RobSeaman Workshop photo #2 (bigger)
PNGtif CRW_7302Small.tif r1 manage 549.6 K 2005-12-06 - 18:06 RobSeaman Workshop photo #2
Unknown file formatext ExampleSECNOAAalertsforecasts r1 manage 1.5 K 2005-12-06 - 05:52 RobSeaman Example SEC NOAA alerts & forecasts - Frank Hill
PowerPointppt ResultsoftheHTNWorkshop.ppt r1 manage 460.0 K 2005-12-06 - 17:50 RobSeaman HTN workshop - Alasdair Allan
PowerPointppt STCVOEvent_new.ppt r1 manage 52.5 K 2005-12-06 - 05:37 RobSeaman STC - Arnold Rots
Microsoft Word filedoc VO-standard-vocabulary_3.doc r1 manage 190.0 K 2005-12-06 - 21:25 RobSeaman Andrea's version of Rick Hessman's VO vocabulary
PowerPointppt VOConcepts-VOEventII-2005.ppt r1 manage 789.5 K 2005-12-05 - 04:53 RobSeaman VOConcepts / UCDs - Rick Hessman
PowerPointppt VOEvent05_ChrisSmith_pub.ppt r1 manage 6818.5 K 2005-12-05 - 18:16 RobSeaman ESSENCE, Super Macho & DES - Chris Smith
PowerPointppt VOEvent2.Wagner.LBT.ppt r1 manage 10648.0 K 2005-12-05 - 20:12 RobSeaman LBT & VOEvent - Mark Wagner
PowerPointppt VOEventII.ppt r1 manage 3526.0 K 2005-12-06 - 16:01 RobSeaman VOEvent Net - Matthew Graham
PDFpdf VOEventII_Agenda.pdf r1 manage 1458.0 K 2005-12-05 - 00:24 RobSeaman Agenda for VOEvent II workshop
PowerPointppt VOEventNet_ajd.ppt r1 manage 224.5 K 2005-12-06 - 16:56 RobSeaman VOEvent transport - Andrew Drake
PowerPointppt VOEventSolarPhysics.ppt r1 manage 14031.5 K 2005-12-05 - 20:05 RobSeaman Solar Physics - Frank Hill
PowerPointppt VOEvent_spec.ppt r1 manage 753.0 K 2005-12-05 - 01:27 RobSeaman VOEvent v1.0 specification - Rob Seaman
PowerPointppt VOEvent_spec_new.ppt r1 manage 825.0 K 2005-12-06 - 15:30 RobSeaman VOEvent v1.0 specification (new) - Rob Seaman
JPEGjpg VOEventsmall.jpg r1 manage 339.5 K 2005-12-11 - 06:31 RobSeaman Workshop Poster
PowerPointppt VOMicrolensing_new.ppt r1 manage 871.5 K 2005-12-06 - 05:36 RobSeaman Microlensing & follow-ups - Kem Cook
PowerPointppt VOWII.ppt r1 manage 4166.0 K 2005-12-05 - 17:48 RobSeaman TALON/RAPTOR - Robert White
Unknown file formatext WhereWhenwithRegions r1 manage 5.2 K 2005-12-06 - 15:29 RobSeaman Where When with Regions - Arnold Rots
PowerPointppt eSTAREventNetwork.ppt r1 manage 2300.0 K 2005-12-05 - 17:47 RobSeaman eSTAR - Alasdair Allan
PowerPointppt mahabal_tucson_voevet2.ppt r1 manage 5593.0 K 2005-12-06 - 15:29 RobSeaman Transients from NEAT - Ashish Mahabal
Postscriptps r1 manage 3187.9 K 2005-12-06 - 16:55 RobSeaman HETE - Nat Butler
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Topic revision: r46 - 2005-12-12 - RobSeaman
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