First, from the menu bar select “Recording” and then select “Measurements/New” and save a *.mea file. A typical file name would be, “2007-12-06-0458-DP” for an image taken of Mars on December 06, 2007 at 0458UT by Damian Peach.

Second, from the menu bar select “Recording” then “Image Measurement…” and “Open Image (F7)” to open an image file. Fill in the UT date and UT time and then hit “Ephemerides (F8)” to compute the ephemeris. Close the ephemerides page.

Third, select the tab “Opt.” and make sure the “Normal Image” is checked in the “Image orientation” panel.

Next, select the “Adj” tab. Note: For a simple inverted image, that is south at the top and preceding limb to the left, hit the “Backspace” key to invert the frame so that the “N” is to the bottom and “P” is to the left. Now, the image and fame are orientated to match the north-south and sunlit east or west limbs. To center the frame and adjust the size of the frame to fit the general outline of the planet use the following instructions from his help file:

[Arrow keys] removes frame

[PageUp] increases frame

[PageDown] decreases frame

[Backspace Key] rotate frame 180°

Finally, use the “Pos” tab and position the cursor over the feature to be measured and left click to mark the feature, record and/or file away the positions.

After image is loaded (1) the frame may be too small and with wrong orientation. Use [Backspace Key] to invert frame (2). Adjust frame to fit image (3) and use the “Pos” tab (4) to measure a particular feature. Image: December 06, 2007 at 0458UT by Damian Peach.

To save the ephemeris, latitude and longitude of the feature select “Save (F2)” and use the *.mea file you previously created. To add more features to the file use the “Pos” section, add features then save-replace the existing *.mea file.

To view this file from the menu bar select “Lists” and then “measurements” on the menu bar, double click on the appropriate files and examine the file.