How long is night sky

Shutter speeds ranged from 15 to 25 seconds. Pete manually focused the camera on the closest trees in the foreground. He also decided on the location based on its distance from cities, to eliminate light pollution affecting the images. Both Pete and his assistant held Nikon Speedlights with colored gels over the flash heads. During the time the shutter was open, they would "pop" the flashes, to illuminate the foreground trees and boulders.

With Pete to one side of the camera, and his assistant on the other, they began painting with light from a distance of about 15 feet from the camera, each moving further from the camera, on an angle that brought them close to the subjects in the foreground. This allowed the light to be more dimensional, wrapping around the trees. Each was able to pop off from two to 10 flashes from each Speedlights during each exposure. Pete explained that while the Speedlights aren't constant light sources, you still need to be aware of where you're pointing the flash so you don't end up with hot spots in the image overexposing a portion of the photo.

Photographing the moon along with the foreground landscape can be tricky because of the wide dynamic range. Exposing for the foreground might cause the moon to be overexposed, and exposing for the moon might cause the foreground to be too dark. In this case the optimum solution may be to create a multiple exposure or composite.

Image Overlay: There are a few ways that you can add the moon to another image for a more interesting composition. Deborah often uses this technique. In the shot of the Fishing Shack photo 4 in the grouping above , she first photographed the moon, then the fishing shack, combining them in-camera using the Image Overlay function.

Check your manual to find out if your camera offers the Image Overlay feature. Post-production composite: Another technique is to photograph the moon and the landscape as separate images and combine them together using an image-editing program. Use the same focal length lens that you shoot the landscape with, when you photograph the moon, for the most realistic look in the final composite.

It also makes the actual compositing easier to do. Digital photography allows photographers the ability to use a lot of really cool techniques for capturing imagery—even the passing of time—by using time-lapse photography. You choose the number of images to take, at specified intervals and the total period of time that you want the camera to shoot these images in.

One such program is Quicktime Pro, however there are also free software programs available that you can use too. You can get as creative as you want—panning across the screen or zooming into the scene as the time-lapse movie plays. Some higher-end Nikon DSLR models incorporate a time release movie mode that takes care of processing the hundreds or thousands of individual exposures into a finished time lapse movie, right in the camera.

We asked him for suggested exposures to start off with. And, because digital cameras let you see what you just captured, you can double check the exposures and make quick adjustments on the fly.

Shooting time-lapse sequences is similar to shooting a single image in that exposure is based on the shooting conditions. Now that's a huge swath of the planet that'll be able to see at least part of the eclipse, including North and South America, Eastern Asia, Australia, and the Pacific Region. So check the timing of its visibility for your area. For U. East Coast observers, the partial eclipse begins a little after 2 a. For observers on the West Coast, that translates to beginning just after 11 p.

Partial lunar eclipses might not be quite as spectacular as total lunar eclipses — where the Moon is completely covered in Earth's shadow — but they occur more frequently. And that just means more opportunities to witness little changes in our solar system that sometimes occur right before our eyes.

All month long, if you're up late and cast your gaze toward the east, you'll notice some familiar companions have begun rising late in the night. The familiar stars of Northern winter skies are returning, rising late at night and sitting high in the south by dawn.

On galaxy group scales and smaller, local gravity overpowers the universe's expansion. The stars in our Milky Way galaxy and in nearby galaxies are not increasing in their distance from the earth, despite the expansion of the universe. As a result, the stars in our galaxy and in nearby galaxies are not growing dimmer over time.

Interestingly, almost all of the stars that you can see in the night sky with your naked eye are in our galaxy. This means that the expansion of the universe will have essentially no effect on the appearance of the night sky to the naked eye, no matter how long we wait. The night sky will not go completely dark because of the expansion of the universe.

Our senses are stuck in the past. We hear the past. While sound travels about a kilometre every three seconds, light travels , kilometres every second. When we see a flash of lighting three kilometres away, we are seeing something that happened a hundredth of a millisecond ago.

Read more: Curious Kids: Are there living things on different galaxies? But as we look further afield, we can peer further back. We can see seconds, minutes, hours and years into the past with our own eyes. Looking through a telescope, we can look even further into the past. The Moon is our nearest celestial neighbour - a world with valleys, mountains and craters. We see the Moon not as it is, but as it was 1.