Sep 3, 2008NVOSS 2008 1

Mobile VO

Mike FitzpatrickNOAO

Sep 3, 2008NVOSS 2008 2

Introduction

• The iPortal is a web-app for the iPhone / iPod Touch providing a mini portal to VO data and services.

• Standard CGI-based web-app using VOClient tools on the server-side, and CSS to fit the iPhone screen size.

• Fully functional prototype to demonstrate capabilities.

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Screenshots

• Single textbox entry– Object Name– Coordinates– Search Terms

• Modifiers used to restrict search (e.g. ‘i:m51’ to search only images services)

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Screenshots

• Tapping the textbox brings up the built-in keyboard interface automatically

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Screenshots

• Task tries to resolve term either via Sesame or the Registry

• If object, an image is displayed and the coordinates printed

• The i button brings up additional image controls

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Screenshots

• Image controls allow Pan / Zoom

• Controls done using JavaScript

• Images in SDSS footprint are in color, otherwise DSS, but all-sky coverage

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Screenshots

• Search terms bring up summary of results

• Selecting a type shows resources only of that type

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Screenshots

• Titles of services displayed in list

• The Q button is a shortcut to a query form of that service QuickTime™ and a

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Screenshots

• Selecting a title shows the full Registry record

• Again an option to query the service, this case a VizieR table

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Screenshots

• Full access to the table is allowed by 2-fingered scrolling

• Result is a simple HTML table

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Screenshots

• Sample of a query form for an image service

• Input can be position or object name

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Screenshots

• SIAP results will show preview images as links

• A service to render FITS images could be written

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Screenshots

• Preview image shows results

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Screenshots

• Pinch gesture can be used to zoom the image, standard part of web browser

• Pan provided by 2-finger scrolling

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What About Normal Cell Phones?

• Usually come w/ smaller screens (e.g. 160x128). Recently 320x200 is common.

• MVO is a web-app for these small screens.

• Emphasis on basic query, no data access allowed

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MVO on Cell Phones

• Resolver mode output pretty basic.

• Just enough to point a telescope if you’re in a field with your telescope but no internet connection.

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MVO on Cell Phones

• Registry search prints ShortName owing to small screen size

• Each item is a link that clicks thru to the full Registry record.

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MVO on Cell Phones

• Registry records prints essential fields.

• Enough information to know what the resource is, but we restrict printing (e.g. long descriptions) to minimize data transfer.

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MVO on Cell Phones

• Inventory mode prints a simple count of matched resources and records found in a 10” radius.

• Result is the resource Title since these are typically Vizier tables.

• Cluck thru to full resource record

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http://iraf-nvo.noao.edu/iportal

http://iraf-nvo.noao.edu/mvo