at risk of stating the obvious, tripod and remote release are essential. dark skies help, so ideally need to get out into the countryside away from street lights and their associated glow.
you need to be able to locate perseus in the sky as the streaks will radiate from this point in the sky. ideally, centre the image on the pole / north star. perseus is located in the north east, and 'below' polaris (about 15-25 deg of elevation...10 deg being about the width of a fist of an outstretched arm)
wide angle (the wider the better) is best as the meteors can appear anywhere in the sky - i'll be using the 10mm siggy.
settings - aperture wide open, ISO 200 or 400 (depends on the amount of light pollution at your location), shutter speeds again depend on the amount of light pollution. start with 30s, take a few test shots and review the pics. if using shorter exposures, then the iso could be bumped up to capture fainter stars / meteors. to get nice star trail photos, then the exposures will need to be significantly longer. light pollution once again comes into this. set camera into continuous shooting mode, manual focus (prefocus on a distant object) and latch the shutter release open.
set camera up in house. take camera outside at least 30 mins before you intend to start shooting so the temp can match that of outside and not have the lens fog over. for the cool down, cover the camera with a chamois etc to reduce the effect of dew forming on it.
the peak of the perseid shower sees about 120 meteors per hour, however this year is expected to be better with rates nearly double this. the peak is either tonight around midnight or tomorrow around midnight.
the best photos i've seen have many light streaks and were shot using shutter speeds of over 10mins. dark skies are essential to have any chance of getting results like that.
ideally, a tree or 2 silhouetted on the horizon will help to anchor the photo and add something recognisable to the photo.
warm clothing, reclining chair and even a flask of hot drink will make viewing a lot more comfortable.
finally, hope it doesn't cloud over
link to nasa site... http://science.nasa.gov/headlines/y2...rseids2009.htm