Hooking up a meta-network with VOEvent Robert White Stuart Evans W. Thomas Vestrand James Wren Przemyk Wozniak Los Alamos National Laboratory Alasdair.

Hooking up a meta-network with VOEvent

Robert White Stuart Evans W. Thomas Vestrand James Wren Przemyk Wozniak

Los Alamos National Laboratory Alasdair Allan

University of Exeter, eSTAR Project

The VOEvent Workshop II 2005R.R. White 11/2005

2nd VOEvent WorkshopTucson 2005

The VOEvent Workshop II 2005R.R. White 11/2005

TALONS Developments(Telescope Alert Operations Network

System)

Additions: VOEvent format transmissions eStar network Interface VOEvent client receiver New monitor interface

Original Mandate: To support the RAPTOR stereoscopic wide-field optical transient search.

System Highlights Server / Client based bi-directional network Supports unlimited clients and outside network connections Uses Distributed Sensor Network (DSN) architecture

Current TALONS Clients• RAPTOR A & B

– System separated by 38km baseline– Wide Field mosaic system, each 4x 85mm– Narrow field fovea, each 1x 400mm

• RAPTOR P– 4x 400mm mosaic

• RAPTOR S– 0.4m OTA (3 interchangeable detectors)

• Back illuminated 1k x 1k CCD• Photon counting imager• Grating spectrometer

• RAPTOR T (system testing)– 4x 0.4m co-aligned OTAs

• Different filters (B, V, R, I) on each camera

• RAPTOR 16 (under construction)– 16x 200mm mosaic

Possible additions (soon to come?)• Apache Point 1.0m telescope – NMSU ( VOEvent

software delivered)• PARITEL (IR 1.2m telescope ) - UC Berkley

(VOEvent software delivered)• HOU Educational 0.75m telescope - UC Berkley• Eudoxos - Greek National Observatory for Education

(VOEvent software delivered)

The VOEvent Workshop II 2005R.R. White 11/2005

The VOEvent Workshop II 2005R.R. White 11/2005

The Thinking Telescopes (T3) Project

Machine Learning

Evolving Database(SkyDOT & NVO)

Cerebro / TALONS

www.thinkingtelescopes.lanl.gov

The Heterogeneous Telescope Workshop 2005R.R. White 7/2005

Two words…

SPEEDSome of the most ground-breaking science could be lurking in the first few seconds!

What’s Most Important to Us (RAPTOR and T3 Project) in Event

Notification?

Efficiencyand

Action Items from VOEvent Workshop I

• Create VOEvents from RAPTOR alerts– RAPTOR internal alerts are being generated as

VOEvent and stored.– Bonus: GCN Alerts are now being translated to

VOEvent, re-transmitted, and stored.

• Integrate TALONS network with another network using VOEvent as the communication format– TALONS – eSTAR gateway developed and

operational.

The VOEvent Workshop II 2005R.R. White 11/2005

Could be broadcast to more

than one node

“phase0” request (RTML)

1.

TALONSCentral

TALONSClients

eSTARAgent

Broadcast to to all eSTAR nodes

Telescope System Configurations (RTML)

2.

TALONSCentral

TALONSClients

eSTARAgent

Score Observation (RTML)

3.

TALONSCentral

eSTARAgent

returned by all nodes

Best possible instruments determined

TALONSClients

eSTAR – TALONS Heterogeneous Telescope Network Communication Flow - Observations

The VOEvent Workshop II 2005R.R. White 11/2005

The VOEvent Workshop II 2005R.R. White 11/2005

Return Observation Score (RTML)

4.

TALONSCentral

eSTARAgent

eSTAR – TALONS Heterogeneous Telescope Network Communication Flow - Observations

(Cont.)

Request Observation (RTML)

5.

TALONSCentral

eSTARAgent

TALONSClients

TALONSClients

Observation Complete (RTML)

6.

TALONSCentral

eSTARAgent

TALONSClientsObservation

Report (VOEvent)

Database

General Broadcast

Observation Data

The VOEvent Workshop II 2005R.R. White 11/2005

Alert Issued (VOEvent)

1. eSTARAgent

TALONSCentral TALONS

Clients

Outside Networks(i.e. GCN)

Local Database (VOEvent)eSTAR Database

(VOEvent)

Acknowledge (VOEvent)

2. eSTARAgent

TALONSCentral

TALONSClients

Contains sender’s storage location for data and data

file name

NOTE: Works regardless of alert originator (e.g. If eSTAR issues the alert TALONS acknowledges with the database alert information.)

eSTAR – TALONS Heterogeneous Telescope Network Communication Flow - Alert

RSS Feed (VOEvent)

VOEvent Clients

Systems Still Being Developed

• Web interface (via Thinking Telescopes web site) for creating manual VOEvents

• SkyDOT database translation from / to VOEvent• Analysis / Decision tool for full integration of SkyDOT

and other databases.• Secure data transfer (other than direct connect)• Self spawning server (redundancy to system)• Additional versions to support OSX clients• Integrated aggregator

The VOEvent Workshop II 2005R.R. White 11/2005

Issues Still Pending

• Transmission security• Finalize the format• Efficiency vs. complexity• Product support• Sociology

The VOEvent Workshop II 2005R.R. White 11/2005

For More Information on These Projects see:

www.thinkingtelescopes.lanl.govwww.raptor.lanl.gov