Leonids are bits of debris from Comet Tempel-Tuttle. Every 33 years the comet visits the inner solar system and leaves a stream of dusty debris in its wake. Many of these streams have drifted across the November portion of Earth's orbit. Whenever we hit one, meteors come flying out of the constellation Leo.
The Leonids are famous for storming, most recently in 1999-2002 when deep crossings of Tempel-Tuttle's debris streams produced outbursts of more than 1000 meteors per hour. The Leonids this year won't be like that, but it only takes one bright Leonid streaking past Mars to make the night worthwhile.
How to Watch the Leonid Meteor Shower
Meteor showers are really easy to view, and you don't need any special equipment. It helps to get out of cities away from artificial lights and light pollution. Take warm clothes, hot drinks and blanket or a comfortable chair with you. Viewing meteors, just like all astronomy, is a waiting game and you need to be comfortable, especially during the winter months. Finally, you need to let your eyes adapt to the dark - avoid looking at your mobile phone or any other light as they will hinder night vision.
Meteors will always travel away from the constellation for which the shower is named. This apparent point of origin is called the radiant. For example, if you look directly at Gemini you will see geminid meteors radiate out from the constellation. Lying down and observing overhead can be the best way to observe meteor showers.
The only thing you will need is a clear and comfortable dark spot. You won't have to use binoculars or a telescope to enjoy the night's sky.
The showers will appear in the sky like shooting stars so be sure to make a wish as they pass you by.
Photographing Meteor Showers
For photographing meteor showers, a digital camera mounted on a tripod is essential to steady the images. Meteors will move swiftly across the sky so a quick trigger finger also helps, but even random clicks during the height of 'prime-time' can also produce great results. Be sure to have the camera focused on infinity and, if your camera permits, leave the shutter open for several minutes for the most spectacular photographic effects.