Comet Hale-Bopp is here!

Information for Fort Garrison Elementary School
Students, Parents, and Teachers

(Updated: 24 March 1997)

The above picture was taken from the Wapiti Valley of Wyoming on Saturday night, March 22nd. Comet Hale-Bopp is that white streak at the upper right hand section of the picture. A regular camera was used, but it had to be mounted on a tripod because the exposure time was almost 1 minute long. The moon was full and provided enough light so that you can see the landscape, as well as the comet.

While you need a camera to capture a scene like this, the comet looks really neat even if you just use your own eyes. If you have a pair of binoculars, Hale-Bopp will look even better.

It's very rare that we have an opportunity to see a comet as bright as Hale-Bopp, so I urge you to take a look. It's easy to find the comet, even from your own backyard, if you have a clear view of the Northwest (just after sunset) or Northeast (just before dawn) part of the sky. Plus, you'll be able to brag to your grandchildren that you saw the GREAT COMET OF 1997! Hale-Bopp won't be back again for 2800 years, so we're indeed lucky to have a chance to see it.

PARENTS: Use this opportunity to do some hands-on astronomy with your children and spark their interest in science.

How to find Comet Hale-Bopp

Comet Hale-Bopp is now EASY to see, even from Baltimore, as long as the sky is clear.

You can see the comet either in the early morning or early evening hours. In the morning, look to the NORTHEAST about an hour before sunrise. In the evening, look to the NORTHWEST about an hour after sunset.

Remember that the Sun rises in the EAST and sets in the WEST. Here are some detailed instructions for picking up the comet after sunset.

1) Take note of where the Sun sets. That direction is WEST.

2) Set yourself in the direction of the sunset. Then turn to your right by about 45 degrees. (On a clock face that corresponds to a rotation of about one and a half hours.)

3) Look up from the horizon about 20 degrees. If you extend your arm straight out ahead of you, the angle subtended by your clenched fist is about 10 degrees. So you should look about two fists up from the horizon.

4) If there are no clouds in that part of the sky, then you should now be able to see the comet. You need to wait until about 7 pm, or a little later, so that the sky gets sufficiently dark to pick up the comet. The comet is the brightest astronomical object in the Northwest. Hale-Bopp looks distinctly different from any stars or planets in the sky. The comet has a TAIL that will look like a streak extending to your right.

5) For your best view of the comet, use a pair of binoculars. Hale-Bopp really looks nice in binoculars.

After looking at the comet, there are a few other interesting things in the night sky that you might want to check out.

The "red planet" MARS is that bright star-like object rising in the EAST. The constellation, ORION, with 3 bright stars forming a "belt" and a couple of other stars forming a "sword", is easily visible in the SOUTHWEST. A cluster of stars, called the Pleides, can be found in the WEST, a bit higher off the horizon compared to the comet. If you look at the Pleides with binoculars, you'll be able to see the "seven sisters", which are the seven brightest stars in the cluster.

The folks at Sky and Telescope magazine have produced a couple of very nice, and more sophisticated, Hale-Bopp finder charts. One is for late March , one is for early April , and one is for late April .

If you go out to look for the comet, make sure that you:

If you haven't seen the comet yet, you still have a chance! I expect the comet to remain visible shortly after sunset in the northwest sky for at least the next few weeks. Don't give up if the weather happens to be bad the first couple of times you try. You'll eventually "catch" the comet.

The comet makes it closest approach to the Sun on April 1st and then starts its long journey back out to deep space, not to be seen again for about 2800 years! Now don't you feel lucky to have seen it?

Background Information on Comets and Hale-Bopp

The comet was discovered in July 1995 by Alan Hale in Cloudcroft, New Mexico, and by Thomas Bopp near Tucson, Arizona. Both are avid "stargazers" who enjoy going out to look at the sky, particularly near the times of "new moon", which is when the sky is darkest and you can see things best. Right now we're having a "full moon". If you go outside at night, you'll notice that the moon is so bright that it lights up much of the sky and makes it tougher to see comet Hale-Bopp. But the moon is rising later and later, which means that you should have an improving view of Hale-Bopp just after sunset as we move towards the first week of April.

So what is a comet? A COMET is a giant, dirty snowball! It has a NUCLEUS, a COMA, and two kinds of TAILS. If you want to learn more about comets, check out our comet facts page .

Make Your Own Comet!

Although there are still many things about comets that we do not understand, scientific investigations over the past couple of decades (similar to those conducted on Hale-Bopp) have enabled us to identify at least some of the molecules that are contained in comets. This knowledge allows us to take a stab at creating our own comet, either as a class project or even in our homes. Here is the recipe that you should follow. But PLEASE don't try this without adult supervision because the dry ice in this recipe can cause severe skin burns if not handled properly.

Where Can I Learn More about Comet Hale-Bopp?

Other Comet Hale-Bopp WWW Sites:

o You might want to check out Sky and Telescope Magazine's online comet page for observing tips, nice finder charts (which I've already included above), and up-to-date information on Comet Hale-Bopp observations made by amateur astronomers from around the world.

o The JPL Hale-Bopp homepage is maintained by Ron Baalke of NASA's Jet Propulsion Laboratory and is probably the most comprehensive Hale-Bopp WWW site in the world. From this site you can find some of the latest images of the comet, finder charts, and links to just about every other important Hale-Bopp WWW site. I highly recommend checking it out.

o Last summer I put together a WWW page for NOVA that has a lot of general information on comets that was written for the public. It also has some specific information on comets Hyakutake and Hale-Bopp.

Some Pretty Pictures of Hale-Bopp

If you want to get a good idea of what the comet might look like when using binoculars, click here . This picture was taken in Hawaii by Richard Wainscott.

For a view of the comet from the Kenai Wildlife Refuge in Alaska, click here . This picture was taken by Bill Hutchinson and shows the comet very close to our Milky Way galaxy.

The Swedish amateur astronomer, Bengt Ask, took this nice picture of Hale-Bopp that shows two tails .

This WWW page is designed to provide information on Comet Hale-Bopp to the students, parents, and teachers of Fort Garrison Elementary School .

Comments on this WWW page can be sent to Hal Weaver via e-mail at weaver@pha.jhu.edu . Hal is a professional Planetary Astronomer and the father of Alex Weaver, who is a second grader in Mrs. Blum's class at Fort Garrison.