The Photographer’s Ephemeris is a good program on an Android. But there are several other programs you can jump between to get some of the same information. It is a powerful all-in-one program that I’ve found no equal for on Windows, Mac, Linux, or Android. One of my favorite apps for this on an iPhone is PhotoPills. To translate these twilight terms into specific times for our geological location we have to use apps and almanacs. NIKON D700 + 14-24mm f/2.8 15mm, ISO 800, 19/1, f/2.8 LocationĪstronomic dusk and dawn will vary between seasons and locations. Blue hour and nautical twilight are my favorite times to either start a timelapse for star trails, or end one, with some rich dark blue colors in the sky. On either side of that is nautical twilight and blue hour, where only the brightest stars and a few planets are prominent but the Milky Way will get washed out. The Milky Way is best photographed during the darkest period of night between the end of astronomical dusk and the beginning of astronomical dawn. ![]() Blue hour and golden hour overlap some of these twilight phases and definitions of them vary, but you could consider golden hour to be when the sun is 6° above the horizon to -4° below the horizon, and blue hour from -4° to -6°. At this time the night sky is as dark as it will be for the rest of the night until dawn when the process will reverse with astronomic twilight beginning when the sun reaches -18° below the horizon, climbs through nautical twilight, and ends after civil twilight at sunrise. Twilight at dusk or evening begins with civil twilight at sunset, dims through nautical twilight, and ends after astronomic twilight when the sun is -18° below the horizon. Nautical twilight is -6° to -12°, and astronomical twilight is -12° to -18°. Other times of the year it is Mars Hill in Aroostook County.Ĭivil twilight is when the sun is between 0° and -6° below the horizon. For example: Cadillac Mountain in Acadia National Park throughout most of the year is the first place in the United States to see the sunrise because of the elevation and how far east it is. If you are in a valley, you will see it later of course. If you are higher on a mountain, you will see sunrise earlier. To see the sun at this measured time you would have be at sea level and observe the sun rising or setting over the ocean with no obstructions. Sunset and sunrise are when the sun is at 0° elevation on the horizon. Twilight is defined in three distinct phases, and is based on the elevation of the sun: civil, nautical, and astronomical. But first, let’s look at the scientific terms. ![]() We’ll try to define them a bit more accurately in a minute. They are rather broad terms without any real scientific measurement, but they are the coveted times of day with beautiful light before, during, and after sunset or sunrise. Most photographers are familiar with the phrases “golden hour” and “blue hour”. This transitional period is known as twilight, and can be dawn (morning) or dusk (evening). Generally speaking, the night is between sunset and sunrise, but of course, it does not get suddenly darker like a light switch! There are some transition periods between day and night that are good to know. For starters, there are some basic terms that should be defined to help you know which time of night is dark enough. The great advantage over post processing your time lapse sequences in your favorite video production software is the much better video quality gained from the preprocessing of the Source-files (RAW, DNG or JPG).Before you go out shooting, it’s best to do some planning to know the best times and locations to even see the Milky Way. It allows you to continuously change Adobe Lightroom or Camera RAW development parameters over the time which enables key-frame animations like in video-processing. LRTimelapse will then take your movies to the next level. LRTimelapse is the tool to make professional looking time lapse movies using Adobe Lightroom, Adobe Camera RAW or Adobe After Effects.
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