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 * Home
 * Visual Tools
   * Overview
   * Navigate
   * Explore
   * Finding Chart
   * Quick Look
   * Image List
 * Search Tools
   * Overview
   * SQL Search
     
   * Rectangular Search
   * Radial Search
   * Imaging Search
   * Spectroscopic Search
   * IR Spectroscopic Search
 * CrossMatch Tools
   * Overview
   * CrossMatch ID
     
 * More Tools
   * Overview
   * My History
   * Schema Browser
   * Scrolling Sky
   * Get Fields
   * Get Spectra
   * Get Plates
 * Support
   * Overview
   * About the Data
   * Schema Browser
   * Sample Queries
   * SQL in SkyServer
   * Query Advice
   * APIs
   * SQL Tutorial (DR16)
     
   * Contact
   * 
   
 * CasJobs

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SKYSERVER



Explore the Universe with the Sloan Digital Sky Survey
Data Release 18
 * Data Release 17
 * Data Release 16
 * Data Release 15
 * Data Release 14
 * Data Release 13
 * Data Release 12
 * Data Release 10
 * Data Release 9
 * Data Release 8
 * Data Release 7
 * Data Release 6
 * Data Release 5
 * Data Release 4
 * Data Release 3
 * Data Release 2
 * Data Release 1

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Navigate

Explore

Finding Chart


Quick Look

Radial Search

SQL Search


or a question...
About the Sloan Digital Sky Survey


The Sloan Digital Sky Survey, or SDSS, is an international collaboration of
scientists gathering data from two telescopes in North and South America to
build the most detailed Three-Dimensional Imagery of the Universe ever made. The
SDSS has produced deep multi-color images of one third of the sky, and created
spectra of more than three million astronomical objects.

About SciServer


SciServer is an NSF-supported project to build a big data platform that brings
the computing to the data for extremely large datasets. Using SkyServer with
your free SciServer account unlocks additional features.

SciServer hosts the following web-based apps that allow you to query and analyze
your data in the cloud.

CasJobs

Compute

SciDrive

Educational Resources


Voyages is the educational website for the SDSS. Voyages serves up projects,
activities, resources, and research experiences for students of all ages that
build on data from the Sloan Digital Sky Survey.

How do I get data?

Use a Visual Tool


SkyServer's Visual Tools make it easy to visualize and explore detailed
astronomical data in regions of the sky covered by the Sloan Digital Sky Survey.

Search for an object with...

 * Image List: Generate image cutouts from object positions
 * Imaging Search: Form-based query for imaging data
 * IR Spectroscopic Search: Form-based query for infrared spectroscopic data
 * Spectroscopic Search: Form-based query for spectroscopic data

Search for an object by location

 * Radial Search: Search the sky around a given point
 * Rectangular Search: Search the sky in a rectangular region
   

What can I do with my data?

Although you don't need to be logged in to SciServer to use SkyServer, logging
in gives you greater ability to integrate with other SciServer web apps.
Save your visual search results


Navigate, Explore, and Quick Look let you save your results to an online
Workbook. Just click Save in Workbook to save your results, and Show Workbook to
view your results.

Save your search results


While you are logged into SciServer search forms allow you to save your data to
MyDB, your own personal database. From there, your data is available in any
SciServer app.

Download your MyDB data from CasJobs


Your MyDB tables can be viewed and downloaded from CasJobs

Analyze your data with SciServer Compute


Compute's Jupyter Notebooks enable cloud-based analysis next to your data in the
cloud, no downloading required. Use Python, R, and MATLAB to analyze your data
in the cloud.

Compare multiple databases (easy)


Cross-ID is a simple tool that enables you to perform dynamic cross
identifications of SDSS objects against a user defined list.

Compare multiple databases (advanced)

How do I find help?

 * Read the documentation on SciServer.
 * Report a bug or ask a technical question on the SciServer helpdesk.
 * Contact the SDSS helpdesk with science questions: helpdesk@sdss.org
 * Read the SDSS scientific documentation for the latest Data Release at
   sdss.org

Visual Tools

 * Navigate - Look through the sky and view data for stars and galaxies
 * Quick Look - Get basic data about a single star or galaxy
 * Explore - Get complete data about a single star or galaxy
 * Finding Chart - Create an image of the sky as seen through our telescope
 * Image List - View thumbnail images for many stars and galaxies at once

Search Tools

 * SQL Search - Submit a freeform SQL (Structured Query Language) query
   
 * Rectangular Search - Search the sky in a rectangular region
 * Radial Search - Search the sky around a given point
 * Imaging Search - Form-based query on imaging data
 * Spectroscopic Search - Form-based query on spectroscopic data
 * IR Spectroscopic Search - Form-based query on infrared spectroscopic data
 * CasJobs - Asynchronous database tool for long, complex queries

Other Tools

More Tools

 * History - Review the results from SkyServer tools you have used in the past.
 * Schema Browser - Browse database tables, columns, views, and stored
   procedures in the SDSS and other databases.
 * Scrolling Sky -Watch the sky scroll past the SDSS camera during an
   observation.
 * Get Fields - Get SDSS images from the run, camcol, field, and image size.
 * Get Spectra - Get SDSS images of spectra by plate and fiber number.
 * Get Plates - Get images of spectra by Plate ID.

CrossMatch Tools

 * CrossMatch ID - For running a dynamic cross identifications of SDSS objects.
   

CasJobs

CasJobs is an online workbench for large scientific catalogs that allows you to
perform synchronous and asynchronous free-form queries in your browser.

 * Sponsored by:
 * Alfred P. Sloan Foundation
 * The National Science Foundation
 * ARC


 * Policies:
 * Privacy Policy
 * Website Traffic
   
   

 * Contact:
 * email: helpdesk@sdss.org