In addition, the center of your field of view should be in the range of 50 to 70 degrees above the horizon. At this elevation, you are able to see the area of sky from the horizon to the zenith, maximizing your chances of seeing meteors. The use of a lawn chair makes setting up at this angle a simple matter. Record this angle in the degrees altitude box. Record the general atmosphere conditions by circling the appropriate box.
Clouds present a difficult challenge to observers since they are constantly changing.
It would be almost impossible to list every change in cloud cover that takes place. Therefore, it is recommended that if clouds are present, the average cloud percentage over the last 10 to 15 minutes be reported. Note if there are big puffy cumulus clouds or high light transparent cirrus clouds. Obstructions to a field of view can be caused by trees, buildings, or clouds. While observing, the percentage of sky that is blocked by these obstructions is noted at the beginning of the session and at any time a change has taken place.