Author Topic: LROC ACT-REACT Quick Map Tutorial Part One  (Read 7490 times)


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LROC ACT-REACT Quick Map Tutorial Part One
« on: August 18, 2012, 07:32:47 pm »
LROC ACT-REACT Quick Map Tutorial Part One

Part 1 contains a run through of the basic Quick Map features. Part 2 will look at the more advanced M3 data tools.

Please post any comments or questions about ACT-REACT Quick Map in the comments thread here.

Click on the images for larger versions.

Opening Screen
Topography - Path line tool   
                    3D Ground View
Layers - Colour Shaded Relief
              Moon Features
              LROC Featured Images
              Linking from Quick Map

The ACT-REACT Quick Map is the name of the software tool used by the LROC (Lunar Reconnaissance Orbiter Camera) team to manage and map the images sent back. It is very useful for exploring the Moon both wide field and close up as it is based on a WAC (Wide Angle Camera) mosaic base map and incorporates most NAC (Narrow Angle Camera) images. You can find it here and this is the opening screen with notes added in red and white:

******Quick Map has now been updated.
To open the layers panel click on the stacked layers icon below the zoom tool (top left of the new opening screen).******

Opening screen

Quick Map opens with the Colour Shaded Relief ticked "on." Unless you are interested in looking at topography it's probably best to turn this off (or reduce the opacity) and leave just the WAC mosaic displayed. If you are interested in the colour relief map you'll find more information and the key to the colours by clicking the right side arrow and then the palette link.

Note the 2 ways to zoom in and out: by pixel level (bottom left) and via the zoom tool (top right). Click on the coordinates (bottom right) to reveal a pop-up box to enter your own coordinates you can then either press Enter or click the recentre button to the right of the coordinate boxes.

The Quick Map includes various layers:

Layers panel

The layers panel contains overlays to help you examine the Moon in more detail. You can control the opacity of most overlays by clicking the right side arrow. The Moon Features layer adds features to the map which are colour coded by type. These features are named as you zoom in. If you click on the coloured marker a pop-up box shows more information about each feature. The "search" tab lets you search for a lunar feature by name and highlights it on the map. You can then zoom in and explore.

Moon Features

Another way to move around the map is to use the inset global map.

Inset global map

If you want to see a 3D elevation model of your favourite feature select 3D ground view from the list next to the search icon:

3D ground view

******The tools are now accessed by clicking on the toolbar icon (top right of the screen).******

If you want to see how big or deep something is you can use the path line tool which calculates distances and produces a graph of the topography of the feature you mark out.

Path Line Tool

You can draw out a more complicated route by single clicking to anchor a point before you change direction. Always mark the end point with a double click.
For example:

Path Line tool - more complicated route

You can also explore the Moon by dragging the map around.

Quick Map also has a NAC layer. Turn it on to reveal the LROC NAC footprints via the layers panel and zoom in. You can explore these NACs via Quick Map but if you want to examine a particular NAC in the WMS Browser use the search for button and click on a NAC footprint. A pop-up box will reveal a list of NACs and WACs covering that location. Click on any to open in WMS Browser.

NAC layer

Alternatively, you can click on the search icon (top right toolbar) and then click on the lunar surface (or draw a rectangle). Click on your selected point or region again and select Query to see a list of options covering the region of interest you have chosen or select Delete to clear the map.

The LROC Featured Images layer highlights regions of the Moon appearing in the LROC News System. Click on a marker for more information and links.

LROC Featured Images

Linking from Quick Map
You can link to your Quick Map image by clicking on the blue permalink share icon (top right of the screen). This generates a link to the view you have on screen that you can share.
« Last Edit: March 31, 2013, 01:44:04 pm by jules »