KEYWORDS: Data archive systems, Keck Observatory, Human-machine interfaces, Data modeling, Astronomy, Equipment, Data storage, Data communications, Observatories, Image quality
The W. M. Keck Observatory Archive (KOA) has released the Observers’ Data Access Portal (ODAP), a web-application that delivers astronomical data from the W. M. Keck Observatory to the scheduled program’s principal investigator and their collaborators anywhere in the world in near real-time. Data files and their associated metadata are streamed to a user’s desktop machine moments after they are written to disk and archived in KOA. The ODAP User Interface is built in React and uses the WebSocket protocol to stream data between KOA and the user. This document describes the design of the tool, challenges encountered, shows how ODAP is integrated into the Keck observing model, and provides an analysis of usage metrics.
To maintain and expand its scientific productivity and impact, the W. M. Keck Observatory is undertaking a new strategic project to redefine how the Observatory approaches the creation of science products: the Data Services Initiative (DSI). The philosophy of DSI is grounded in the principle that the future of astronomy requires that data must be usable, useful, and quick. Reaching these data goals requires significant changes to key elements of the observing process: observation preparation, observation execution and calibration association, data reduction, and data archiving.
In this presentation, we will introduce DSI and its components, and describe the science gains that are enabled by it.
The W. M. Keck Observatory is welcoming a new era where data reduction and archiving are tightly integrated into our observing model, under the auspices of the Observatory’s Data Services Initiative (DSI) project. While previously the Keck Observatory Archive (KOA) archived minimally processed, raw science data the day after observing, Keck is transitioning to a model in which it archives both raw frames and reduced data in near real-time. These data will be made available to observers and collaborators immediately upon ingestion through a dedicated new interface that will support collaboration and sharing among teams, as well as stream data directly to personal computers without access to Keck’s internal networks. Both the raw and science-ready data products will be made publicly available upon the expiration of data protections. The Keck Cosmic Web Imager (KCWI) instrument is the first whose data are managed this way. It showcases how KOA integrates into an observing night, provides the data needed to make real-time adjustments to observing, and delivers products that allow for faster publication by both our observers and archival researchers. This effort has involved the delivery of new, compact, Python-based data preparation and ingestion software. We also discuss the new and updated Data Reduction Pipelines (DRPs) required to generate science-ready data, how their development and deployment enables the delivery of these products, and how Keck’s commitment to maintaining DRPs in-house will result in more robust datasets for all our observers and KOA users.
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