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You can access the Spectrum web services at the following locations:
Use this service to query the spectrum catalogs
and retrieve flux values vs. wavelengths.
Use this service to perform operations on spectra,
such as resampling and normalization.
Use this service to create, modify and delete your
own spectra from a client application.
Note: these point to the currently set MySpectrum Service, defaults to the MySpectrum Service at JHU.
Every tool published on these pages may be also accessed programmatically via XML
Web Services. We recommend you try the VO way and test drive our webservices and
take advantage of them to automate (for example) the upload of large amount of spectra.
Read the tutorial here to get started. For more details visit
You can learn more about web services from the NVO Summer School proceedings:
If you want to publish your own spectra in Spectrum Services depending on your needs,
you may install the MySpectrum package at your organization and build a spectrum
collection yourself. MySpectrum is a cross-platform implementation of the Spectrum
Web Services that runs on Windows using the .net framework (usually part of the
OS) or on Linux using the mono framework. On Windows you can store the spectra in
Microsoft SQL Server 2005 (which has a free edition called SQL Server Express) or
MySQL. On Linux the only option right now is MySQL, but more servers are going to
be supported in the future.
In order to use mono to program against spectrum services, you are required to install
the latest stable mono version from source. Unfortunately many mono bugfixes
are only available this way, the binary packages are usually out of date. For more
information about downloading the source code and compiling it refer to the mono
webpage at http://www.mono-project.com.
You can download the latest package from our download area.
Spectrum Services implement the IVOA Spectrum Data Model v1.01, it's XML and VOTable
Representation and the IVOA Simple Spectral Access Protocol v1.01 using VOTable
v1.10 (see http://www.ivoa.net/Documents/
for details and references.)
URL to the SSA service: SSA