Analysing the Evidence


To display and analyse your image data files you will use a special image processing software called LTImage.

Take the following steps . . .

LTImage Screenshot

LTImage Screenshot

  1. Using image processing software

    Run LTImage in a new window on your computer desktop alongside this Moon investigation.

    Load your two image data files of the Moon by selecting FILE (menu) and then OPEN DATA IMAGE (option) for two seperate image stores.

    If you have not downloaded, or are not sure how to use LTImage, click HERE.

    For each image file identify the time the observation was carried out by the telscope.

    To do this click on Astro (menu), Image Properties (option) and Calibration (button on right) and you will be able to find out this information.

  2. Identifing different types of surface feature

    You will already have noticed marked differences between your two chosen areas of the Moon.

    Look carefully at your images for different types of surface feature.

    Devise a number of categories in which these surface features can be placed.

    • Use a table similar to the one shown below to record your findings.

    • Make the table as big as you feel necessary.

    • Use a tick to indicate a feature is found in one or both areas and a cross if not.

    • To pick out more detail and to help you identify different types of surface feature, try experimenting with false colour processing by selecting the Colour (menu) and Colour Select (option).

    Surface features (type)Area 1Area 2
       
       
       
       
       

  3. Measure the size of a few chosen surface features.

    If you are not sure how to do this click HERE.

    Use a table, similar to the one shown, to record your results (include units of measurement).

    CraterArea 1Area 2
    1  
    2  
    3  
    4  
    5  

  4. Comparing two areas of the Moon

    Make notes and include comparisons of:

    • Crater sizes

    • Crater distribution

    • Crater density

    • Surface shading

    • Mountain regions

    • Unusual features

    Find out how we can tell the age of the Moon's surface varies depending upon where you look.

    Indicate the youngest and oldest regions on your Moon observations.

    Now you must evaluate your evidence . . .


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