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Using the Analyst's Notebook

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How-to guides on working with PDS data

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Christina Kreisch

In the MSL, MER, and Phoenix Analyst's Notebooks, standard data sets can be found in the sol summaries, but additional data sets can be accessed, as well.

 

These data sets can be located through Resources for Curiosity, Spirit, Opportunity, and Phoenix. Both the MER and Phoenix resources offer additional data sets, data set documents, and a reference list.

 

In MER's additional data sets, you can access:

  • APXS Oxide Abundance Data
  • MI Merged Focal Sections
  • Pancam Atmospheric Opacity Data
  • Rover Motion Counter Data
  • Inertial Measurement Unit Data
  • Traverse and Crater DTMs
  • and Radio Science Orbit and UHF Data

 

In Phoenix's additional data sets, you can find:

  • Robotic Arm (RA) Data
  • Atmospheric Structure Experiment (ASE) Data
  • Telltale Data
  • and Surface Stereo Imager (SSI) Data

 

Both MER's and Phoenix's data set documents contain Data Set Software Interface Specification (SIS) documents, Mission and Instrument Description (Catalog) Files, calibration, and errata files. However, those for MER also include the MER Archive Plan and those for Phoenix contain the Phoenix Archive Plan.

 

The Phoenix resources also provide a map of the landing site, sol documents grouped by subsystem, and various web resources linking to the Phoenix Mars Mission, Planetary Data System (PDS), and related NASA websites. The MER resources further provide Mini-TES locator frames, Coordinate System Definitions, software, and suggestions for further reading.

Christina Kreisch

Through the MER and Phoenix Analyst's Notebooks, sequences of images taken by Navcam, Pancam, Microscopic Imager, and Hazcam can be downloaded as multi-band ENVI formatted images for use with ENVI image processing software.

 

The images can be downloaded under Sequence Download in the Product Sequence menu for any sequence of images. By going into "Sol Summaries" (for Spirit, Opportunity, or Phoenix), you will be able to select a sol and then view the data products from the "Report" menu. By choosing a sequence of more than one image, the product sequence overview page will be displayed. Click on "Sequence Download" from the sequence menu (on the left of the overview page), and the various download formats of the images will appear. You can choose to download images from the left eye, right eye, or both.

 

For example, from Opportunity sol 262 let's download the Pancam data for sequence P2832 that starts at SCLK 151430923. We will save the data as an ENVI image.

 

ENVI_ex1t.png

Click to enlarge.

 

The above screen shot shows the window after clicking the desired Pancam sequence (1P151430923ESF36CLP2832L2C1) in the data products. Once you click on "Sequence Download," your screen will look like the below image.

 

ENVI_ex2t.png

Click to enlarge.

 

We can download data as ENVI image and header files from here. (These two files must be downloaded separately.) Let's display the data in ENVI by opening the File menu and then clicking "Open Image File." After loading the band, the image will appear (see below).

 

ENVI_display_t.png

Click to enlarge.

Christina Kreisch

One of the many features of the MER and Phoenix Analyst's Notebooks is the ability to create an RGB image from three images taken by the Pancam stereo cameras.

 

The initial steps to create an RGB image are the same as for creating an anaglyph image. The RGB feature is found under Image Processing in the Product Sequence menu for a given set of images. By going into "Sol Summaries" (for Spirit, Opportunity, or Phoenix), you will be able to select a sol and then view the data products from the "Report" menu. By choosing a sequence with stereo images, the product sequence overview page will be displayed. Click on "Image Processing" from the sequence menu (on the left of the overview page), and then click on "Create RGB" to open the dialog.

 

Here, you can choose individual frames as the red, green, or blue elements based upon the frames' wavelengths. For Pancam left eye images, selecting filters 2, 5, and 7 for red, green, and blue, respectively, will best approximate the human eye. After selecting the frames, the RGB image can be created for display or download.

 

For example, from Opportunity sol 13 let's use the Pancam sequence P2376 starting at SCLK 129339802:

 

RGB_ex_t.png

Click to enlarge.

 

The above screen shot shows the window after clicking the desired Pancam sequence (1P129339802EFF0300P2376L2C1) in the data products. Once you click on "Image Processing," your screen will look like the below image.

 

RGB_ex2_t.png

Click to enlarge.

 

After assigning the red, green, and blue images as left filters 2, 5, and 7, respectively, the completed RGB image (see below) is displayed.

 

RGB_t.png

Click to enlarge.

Christina Kreisch

One of the unique features of the MER and Phoenix Analyst's Notebooks is being able to create an anaglyph image from a pair of images taken by the Navcam, Pancam, or Hazcam stereo cameras.

 

The anaglyph feature is found under Image Processing in the Product Sequence menu for a given stereo pair of images. By going into "Sol Summaries" (for Spirit, Opportunity, or Phoenix), you will be able to select a sol and then view the data products from the "Report" menu. By choosing a sequence with stereo images, the product sequence overview page will be displayed. Click on "Image Processing" from the sequence menu (on the left of the overview page), and then click on "Create Anaglyph" to open the dialog. Here you can assign individual frames as the left and right components, and then create the anaglyph image for display or download.

 

For example, from Opportunity sol 262 we can choose the Navcam sequence F0006 starting at SCLK 151449877:

 

Ana_Screen_t.png

Click to enlarge.

 

The above screen shot shows the window after clicking the desired Navcam sequence (1N151449877EDN36DJF0006L0M1) in the data products. Once you click on "Image Processing," your screen will look like the below image.

 

Ana_Screen2t.png

Click to enlarge.

 

After assigning the left and right images, the finished anaglyph (shown below) is displayed.

 

Anaglyph_t.png

Click to enlarge.

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