Calculating and Recording Coordinate Metadata on

OPO Newscenter Press Release Astronomical Images:

Project Overview, Status Report and Recommendations for Migration

Lisa Frattare on behalf of Tony Rogers and Jessica Kenney

Presented 12/4/2014

{hst_pr_sia_opo_all_hands_2006_12_06.ppt}

CHAI: Coordinates for Hubble Astronomical ImagesCAPRI: Coordinates for Astronomical Press Release Images

AVM: Astronomy Visualization MetadataVAMP: Virtual Astronomy Multimedia Project

NVO/VO: National Virtual ObservatorySIAP: Simple Image Access Protocol

ACRONYMS

Press release images are made from FITS telescope data

FITS files include World Coordinate System (WCS)i.e. where on the sky the telescope was pointed

Image Pixels Image Header

Coordinate Informationis lost in Press Release Images

due to rotation, cropping, resizing

Software to Measure WCS: Pinpoint*

Target Image: Press release TIFF

Reference Image: FITS data (WCS)

* wcs.py << IRAF kiss.kastrom 1995 LMF

Resultant Image: TIFF image with coordinate info embedded in header

Artwork

Composite

Print layout

Moving Targets

Non-coordinate Image Types

“Must be astronomical from edge-to-edge.”

Astronomical only- these are considered “able”

Astronomical w/ notation “compass” files

Further Limiting of the Sample

Virtual Observatories

-> VAMP (JPL/Spitzer) -> AVM

Digital data, digital connections, digital processing

Many telescopes, many repositories, many bandpasses

Define standards

Build infrastructure & tools

Not best suited for Hubble Data

• Many of these collections are now obsolete• Need to (re)think permanence, archival, long-term investment

and maintenance on collection to make it available for decades

CHAI / MAST-like Projects in the Past

NASA Metadata Standard

Dublin Core Metadata Initiative (DCMI)

dc:tagname dcterms:tagname

Minor Impact:NASA naming

convention: STSCI-2014-24-e.tif

Hubblesite Migration

Objective: To efficiently tag and deliver press release images on-the-fly  

Main Task: Create an EASY mechanism/tool to update Hubblesite image with repeated changes to title/credit/caption/factsand push live (admin of Hubblesite)

Secondary Task: To increase ability for anyone to tag or make changes to current tags with minimal effort. Current scheme is expert-friendly only. Impact to News Production: Minor at first with pre-tagged images

Delivery of pre-tagged images by Lisa & Zolt that could include: • Boilerplate: creator/publisher• Pinpoint: spatial• Distance, proposal/data info • Spectral info, categories, subject name • Proxy title, headline, caption

Current Procedure: Facts + Image Products = Hubblesite Release • Image products delivered ~1 week before. • Edits to text occur within days/hours of release.

Proposed Workflow Change: • Marry metadata to single image and make daughter products• Update header information repeatedly as necessary 

Second-Phase Modifications for News: (more hands-on) Transfer Metadata from TIFS to non-astronomical images or other presentations of the same object: detail crops, full sized images, black and white, composite (UVIS/IR) i.e. caption of image “a” applied to all other images in that release

Other Migration Discussion Points:

• Writer to detach press release info from image: i.e. press release caption to generic description

• Discuss Hubblesite/NASA required metadata and where that can be auto-inserted i.e. constellation, 1st paragraph summar

• Other images to tag: Moving Target, non-Hubble

Initial discussion with: (at the very least)• Carlos (programmer)• Lacey (management/on-line outreach)• Kelly (ingest for Hubblesite)• Lisa (prepares release facts)• Tony (MAST programmer)• Jessica (AVM/MAST STPR) (later with anyone else impacted by the changes: Cheryl, Zolt, writers, etc.)

Astropix eyecandy: