To acquire an image:

Acquiring an image manually allows you to find the specimen, adjust exposure time, and determine thickness before you set up an experiment macro to automate image acquisition.

  1. Set up acquisition parameters for the experiment.

  2. Set the Beam Selector to   (Eye on some systems).

  3. Select the eyepiece filter by rotating the eyepiece filter wheel below the oculars on the scope.

    You will see your selection in the Filter Monitor window on the right-hand side of the workstation screen. As you rotate the filter wheel, the filter name next to EP (eyepiece) changes and the EM and EX (emission and excitation) filters change automatically to match. The displayed colors match the wavelength of the filters. (If your system does not have the Reporting eyepiece filter wheel, the EP filter name is not displayed. On a manual eyepiece filter wheel, filters can be identified by raised metal marks on the outside of the filter wheel. )

  4. Open the shutter by pressing the EX SHUTTER button in the lower left corner of the keypad. You should see light through the objective.

  5. Find your specimen by moving the stage with the joystick. Focus using the coarse and fine focus knobs on the scope body (see To find and center a Specimen).

  6. With your sample centered and focused through the oculars, close the shutter and rotate the Beam Selector to the position. (On some systems, this is labeled SPL or SP.) This directs the light path to the camera rather than the oculars.

  7. Enter an exposure time in seconds in the Resolve3D window Exposure field. A good starting exposure time is 0.1 second (see Finding Exposure Time).

    Note:  You can also find the appropriate exposure time by clicking the Find button. Use Find carefully. This option can photo-bleach the specimen.

  8. Click the Acquire button to acquire an image. The image is displayed in the Data Collection window.

  9. Adjust the image to avoid saturation and get good signal-to-noise ratio. Pixel intensity values range from 0 to 4095. (Minimum and maximum intensity values for your image are displayed next to the Min and Max labels near the bottom of the Resolve3D window.)

  10. Use the position buttons in the middle of the Resolve3D window to find and center the object of interest. Use the Z Slider on the right side of the Resolve3D window to find and center the object of interest. Drag the slider up to find the top of your sample. (When you release the mouse button, an image is acquired and displayed in the Data Collection window.) Drag the slider and acquire images until you are satisfied. Then press the  button to mark that location. Next, use the slider to find the bottom of the sample. When you are satisfied, press the  button to mark that location.

    The top and bottom can be viewed by pressing the  button or the  button respectively. The middle section can be viewed by pressing the  button.

    Notes:

    • To move the stage at different speeds, use the Slow, Medium, and Fast buttons on the keypad.

    • Each time a filter wheel is moved, the shutter automatically closes and must be reopened with the EX SHUTTER button.

      

    Related Topics

    To acquire images with an experiment macro