DS4: Stage 2 Plan

This is the DS4 Stage 2 Plan as distilled from the presentations and discussion at the TAP 2 meeting. All deliverables are due by the end of stage 2 unless stated otherwise. For cross DS issues refer to the relevant matrix (.xls).

Stage 2 Assignments

Description of Tasks and Deliverables

positional VizieR index

Building a general index by position for all VizieR tables. It will be used in stage 3 to build a catalogue footprint service and a VizieR cross-match service.

binary data support in SAVOT VOTable library

Support of binary data will be added to the SAVOT VOTable parser.

study on Aladin to IDL interface

Assessment of possible interaction between Aladin and IDL and how VO tools interact with generic tools from the outside world. This item was triggered by strong pressure from scientists.

improved colour image manipulation in Aladin

Development related to color images in Aladin. Augment color image to a full entity. This includes the capability to save color planes created through the RGB widget while preserving the astrometry. Conversion from colour images to grey scales will be supported.

improved simple footprint previewing

Improvement of the FOV specification in collaboration with ESO and STScI. Test in SIAP extension and provide simple footprint coverage maps for ESO archive.

SIA: improved WCS support for graphic files

Building on the stage 1 prototype service the improvement will include the transition from UCD to UCD+ and the inclusion of further ESO preview images.

requirements for multi-waveband image tool

Requirement document for tool able to build SEDs from both image data and catalogues.

SSA: design ranking algorithm

The IVOA Simple Spectrum Access Protocol introduces the concept of a scroing mechanism to rank matching records by relevance. The purpose of this item is to investigate possible probabilistic scoring mechanisms for database query results and to implement a prototype ranking algorithm in stage 3.

data model for theoretical VO

Coordinate with IVOA Theory IG for the definition of a draft data model for theoretical VO archives allowing easy interaction with observed data.

study to identify applications in Theory VO

Identify public applications, e.g. for best fitting, or proprietary application that is user's own program (DS6 interaction).

study processing environments

Study the optimal processing environment and best interaction with it: workflow study, grid interaction (DS3 interaction).

AstroScope

Provide a service to perform dynamic discovery of data available for further processing via a VO interface. This service adds value and interoperates with the NVO provided Datascope service.

Colour Cutter

Purpose: This tool allows you to select lists of objects (either from catalogues or extracted directly from images) based on their colours, for example to select brown dwarf candidates with (J-K)> 1.4 and (I-z)> 2.4

Geoeffectiveness of CMEs

Purpose: Link solar, interplanetary and geomagnetic data into a workflow that investigates which Coronal Mass Ejections (CME) produce geomagnetic storms at the Earth, and how the solar wind magnetic field and plasma parameters influence this process.

GouldBelt

Purpose: Identification of the component parts of the Gould Belt using existing multiwavelength catalogues. This will form the basis of pointing position data for a future survey of Star Formation in the local Solar Neighbourhood.

Redshift Maker

Purpose: To derive photometric redshifts from optical imaging data.

Movie Maker

Purpose: Service to allow a user to make a movie of solar images by means of a simple interface.

Principal DS4 Partner Contact Persons