Transcript Hooking up a meta-network with VOEvent 2 VOEvent Workshop

Hooking up a meta-network with
VOEvent
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Robert White
Stuart Evans
W. Thomas Vestrand
James Wren
Przemyk Wozniak
 Los Alamos National Laboratory
 Alasdair Allan
 University of Exeter, eSTAR Project
2nd VOEvent Workshop
Tucson 2005
R.R. White 11/2005
The VOEvent Workshop II 2005
TALONS Developments
(Telescope Alert Operations Network System)
Original Mandate: To support the
RAPTOR stereoscopic wide-field
optical transient search.
System Highlights
 Server / Client based bidirectional network
 Supports unlimited clients
and outside network
connections
 Uses Distributed Sensor
Network (DSN) architecture
Additions:
 VOEvent format transmissions
 eStar network Interface
 VOEvent client receiver
 New monitor interface
R.R. White 11/2005
The VOEvent Workshop II 2005
Current TALONS Clients
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RAPTOR A & B
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RAPTOR P
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System separated by 38km baseline
Wide Field mosaic system, each 4x 85mm
Narrow field fovea, each 1x 400mm
4x 400mm mosaic
RAPTOR S
–
0.4m OTA (3 interchangeable detectors)
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RAPTOR T (system testing)
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4x 0.4m co-aligned OTAs
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Back illuminated 1k x 1k CCD
Photon counting imager
Grating spectrometer
Different filters (B, V, R, I) on each camera
RAPTOR 16 (under construction)
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16x 200mm mosaic
Possible additions (soon to come?)
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Apache Point 1.0m telescope – NMSU ( VOEvent
software delivered)
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PARITEL (IR 1.2m telescope ) - UC Berkley
(VOEvent software delivered)
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HOU Educational 0.75m telescope - UC Berkley
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Eudoxos - Greek National Observatory for Education
(VOEvent software delivered)
R.R. White 11/2005
The VOEvent Workshop II 2005
The Thinking Telescopes (T3)
Project
Evolving Database
(SkyDOT & NVO)
Cerebro / TALONS
Machine Learning
www.thinkingtelescopes.lanl.gov
R.R. White 11/2005
The VOEvent Workshop II 2005
What’s Most Important to Us
(RAPTOR and T3 Project) in Event
Notification?
Two words…
Efficiency
and
SPEED
Some of the most ground-breaking
science could be lurking in the first
few seconds!
R.R. White 7/2005
The Heterogeneous Telescope Workshop 2005
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.
R.R. White 11/2005
The VOEvent Workshop II 2005
eSTAR – TALONS Heterogeneous Telescope Network
Communication Flow - Observations
Broadcast to to
all eSTAR
nodes
1.
eSTAR
Agent
“phase0” request
(RTML)
TALONS
Central
TALONS
Clients
returned by
all nodes
2.
eSTAR
Agent
Telescope System
Configurations (RTML)
Best possible
instruments
determined
3.
eSTAR
Agent
Score Observation
Could be
broadcast
to more TALONS
(RTML)
than one node
R.R. White 11/2005
TALONS
Central
The VOEvent Workshop II 2005
Central
TALONS
Clients
TALONS
Clients
eSTAR – TALONS Heterogeneous Telescope Network
Communication Flow - Observations
(Cont.)
4.
5.
6.
eSTAR
Agent
eSTAR
Agent
eSTAR
Agent
Database
General Broadcast
Return Observation
Score (RTML)
Request Observation
(RTML)
TALONS
Central
TALONS
Clients
TALONS
Clients
Observation Complete
(RTML)
Observation
Report (VOEvent)
Observation Data
R.R. White 11/2005
TALONS
Central
The VOEvent Workshop II 2005
TALONS
Central
TALONS
Clients
eSTAR – TALONS Heterogeneous Telescope Network
Communication Flow - Alert
eSTAR
Agent
1.
eSTAR Database
(VOEvent)
RSS Feed
(VOEvent)
eSTAR
Agent
2.
Outside
Networks
(i.e. GCN)
Alert Issued
(VOEvent)
VOEvent
Clients
TALONS
Clients
Local Database (VOEvent)
Acknowledge
(VOEvent)
NOTE: Works regardless of alert originator
(e.g. If eSTAR issues the alert TALONS
acknowledges with the database alert
information.)
R.R. White 11/2005
TALONS
Central
The VOEvent Workshop II 2005
TALONS
Central
Contains sender’s
storage location
for data and data
file name
TALONS
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
R.R. White 11/2005
The VOEvent Workshop II 2005
Issues Still Pending
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Transmission security
Finalize the format
Efficiency vs. complexity
Product support
Sociology
For More Information on These Projects see:
www.thinkingtelescopes.lanl.gov
www.raptor.lanl.gov
R.R. White 11/2005
The VOEvent Workshop II 2005