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#BEST SKYCHART HOW TO#
#BEST SKYCHART DOWNLOAD#

Straw (no bend or cut off the bended part).

6 inches of string, yarn, tooth floss, or thread.

The cut out on page 59 for each student.

You may wish to mark this several times tonight. Find it’s location on your sky chart and draw it. Now that you know the directions and angles on your sky chart, it is time to use it with the moon. That will work to measure the angles on either plane. If you try it fist over fist you will get approximately nine fists in your ninety degree angle. From the tip of the your finger to the outside of the pinky finger on the same hand is about ten degrees. Make your ninety degree angle with your fists again, but this time point with your pointer fingers AND your palms up Your pointer fingers are ninety degrees from each other. From one side of your fist to another side is approximately ten degrees. But you have a handy gadget that you can use whenever you don’t happen to have a sextant with you: your hands.

#BEST SKYCHART HOW TO#

We will show you how to be a little more accurate next.Īn instrument called a sextant(below) is the most accurate way to measure the angles between things in the sky, and we will discuss them later. Try to point to the 60 and 75 degree angles. Imagine dividing that 45 degree angle into thirds as you point into the sky. Much of what we see in the sky will be between the 45 degree and 90 degree marks, particularly if you live in a city. Instead of pointing ninety degrees apart, point 45 degrees. Point to the horizon with one arm and the zenith with another arm, and they are ninety degrees apart on a different plane. Point both hands to the very north, then move your right arm to point directly east. On a sky chart the outer circle is the horizon or 0 degrees and the zenith is the very center and ninety degrees.ĭemonstrate that you can make a ninety degree angle (or any other size angle) in two dimensions. Point to your zenith with one hand and to the horizon with the other hand. If a star or moon was straight overhead in your zenith, you would draw it in the very center of the chart. Your zenith is what is exactly over head of you from your location. Then, if someone came along and perfectly flattened the bowl, the circles show how high in the air the object was. The ant could draw the moon, sun, or stars on the bowl right where he saw them. Imagine you put a perfectly shaped transparent bowl over an ant. A bowl that is perfectly shaped half sphere.Globe or other sphere cut in half (imagine it, don’t wreck your globe).If not, use one of these items to discuss domes: If you have ever been in an arena with a dome over you, discuss that. The atmosphere around you is a dome-shaped half sphere. Inside the circle represents the atmosphere above the ground. Mark on the objects on your horizon in the correct location outside of the circles. The movement of the sun over the day would start by the small E and end at the small west since we first see the sun on our horizon.įace North. The sun rises in the east and sets in the west. Your horizon is represented by the outer most circle. Older students may be reminded that it is 90 degrees from North to East, from East to South, etc. Now is a good time to introduce a compass if you have not done so before. Take the chart outside during the day time and line up the sky chart with North. Make several copies of the sky charts at the end of this book (pg 58.) The straight lines represent the angles for the directions N, S, E, W and in between. As you develop expertise charting the moon you will gain the ability to do more advanced charting with stars, constellations, and galaxies. Tracking the moon is a great way to get oriented to using and making sky charts.

#BEST SKYCHART DOWNLOAD#

Make your own sky chart and sextant for the Astronomy Unit Study.įree Download of Sky Chart & Sextant Below How To Use A Sky Chart Classical Childrens Books Find A Book Your Child Will Love