Spitzer ROC Atlas
In July 2005 the ROC has been taken offline as requested by the Spitzer Science Center (SSC).
The Spitzer Reserved Observation Catalog (ROC) Atlas was a quick-look service to search the for scheduled/approved Spitzer observations. This ROC Atlas was a simplified alternative to the Spitzer Reserved Observation Catalog Visualizer, (also taken offline in July 2005) returning results for just the ROC fixed targets for all Spitzer instruments.
In order to find out whether a specific target has an approved Spitzer observation, please use the SSC's tool Leopard. Instructions are available at the SSC.