1. How to build your own SkyNode A quick tutorial by Alberto Conti & Bernie Shiao Space Telescope Science Institute Baltimore, MD aconti@stsci.eduaconti@stsci.edu, shiao@stsci.edushiao@stsci.edu

2. Introductory Notes This brief tutorial was written after Bernie and I spend a morning at JHU with Alex, Tamas and Wil to set up a SkyNode for GALEX (http://galex.stsci.edu). The implementation was rather easy, and we decided it would be a good idea to document the steps we undertook for others to follow.http://galex.stsci.edu – GALEX uses MS SQL Server as its database server – GALEX database backend is written in C# under.NET Framework 1.1 – GALEX uses IIS as its web server

3. Requirements (based on GALEX example) Database:, i.e. GALEX Objects Table:, i.e. PhotoObjAll – This table contains the catalog of all GALEX objects – Each object has several attributes that will be accessible from each SkyNode – MUST contain: objID, RA, Dec htmID,cx,cy,cz

4. Requirements: continued (based on GALEX example) Objects Table View: PhotoPrimary – This view is obtained from The most general view is obtained by – create view PhotoPrimary as select * from DBObjects Table: DBObjects – Contains the metadata information about the database, such as tables and user functions.

5. Requirements: continued (based on GALEX example) DBColumns Table: DBColumns – Contains the metadata information about each table, such as columns, UCDs, units, etc. – A view name columns was needed for the GALEX implementation and is was generated by – create view columns as select * from dbcolumns HTM Functions – Run skynode-htmInstall.sql and install htm_v2.dll under C:\Program Files\Microsoft SQL Server\MSSQL\Binn

6. Implementation Install SkyNode software under an IIS virtual directory: http://galex.stsci.edu/SkyNodehttp://galex.stsci.edu/SkyNode Edit the Web.Config file and replace the database connection string: – ; Data Source= ; User ID= ; Password= ;Connect Timeout=90" />

7. Implementation: continued Edit the Web.Config file and change the Info() dictionary information such as – SurveyName – SurveyArea – MetaTable – Sigma (astrometric precision) – PrimaryTable – RaName – DecName – Location

8. Implementation: continued Run the following SQL scripts: – skynode-webSupport.sql – Creates all the stored procedures used by the SkyNode web service – skynode-getMatch.sql – Creates the matching stored procedure called by the XMATCH web method

9. Finally… Provide the URL of your SkyNode web service to budavari@pha.jhu.edu: budavari@pha.jhu.edu

10. Important Note The database user under which the SkyNode stored procedures will be executed, must also have execution privileges on db MASTER for ALL HTM stored and extended procedures.