Space Update  modules: Astronomy Module

The images are arranged in a tree structure that is navigated by moving a cursor using a mouse, touchpad, or touch-screen to click on buttons on the screen. The top page of the tree (Figure 1) can be returned to at any time.

Figure 1: Top page.

The top page currently contains six buttons:

Except for the All Sky section, on entering one of these a page of introductory text is displayed. After choosing a sub-section, the available images are shown as thumbnail icons; for example, Figure 2 shows a version of the What's New page in the Stars & Nebulae section.

Figure 2: Example of What's New sub-section in Stars & Nebulae section.

The visitor moves the cursor on to one of these thumbnails (the telescope at the bottom moves to point in the direction of the cursor!), and clicks to select it; a full-screen image is displayed along with a short caption. Longer text captions and credits can be overlaid if the visitor requests them. Figure 3 shows an example. We create these captions either by modifying the ones supplied with the image, or by writing them from scratch. For each picture, we provide the WWW address where we obtained the image (for example the STScI), allowing the interested visitor to learn more at a later date.

Figure 3: Sample image, with information, and with credits overlaid.

The All Sky section is set up differently from the others (Figure 4). It can be navigated either by going sequentially through the images from long to short wavelengths (or vice versa), or by clicking on a wavelength bar at the bottom of the screen. A semi-transparent page of information about each image can be overlaid by clicking the Info button.

Figure 4: Example of the All Sky section.

more Space Update modules: Astronomy | Sky Tonight | Solar System | Space Weather | Space Events

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