Table Descriptions
DR4 Help
 Archive Intro
 Table Descriptions
 Schema Browser
 Introduction to SQL
 Form Query User Guide
 Query Limits
 How To
 SkyServer Sites
 SkyServer Traffic Page
 Web Browsers
 Site News
 Contact Help Desk

SpecPhotoAllSpectroThis is a pre-computed join between the PhotoObjAll and SpecObjAll tables. The photo attributes included are similar to those in PhotoTag. The table also includes certain attributes from Tiles. Many users will want to query the SpecPhoto view, which contains only those objects which are spectroscopically sciencePrimary and photometrically Primary.