David's Images of the Day Photoblog
Views of the sky. Sunrise, sunset, clouds, and weather
View of Mount Denali on a clear day from the Stony Hill Overlook (mile 62). This is on the only road into Denali National Park. Private vehicles are restricted to the first 15 miles into the park. To go beyond that point you either need to walk or take the (hop-on, hop-off) buses provided by the National Park Service.
Star Trails. Following Hurricane Irene, we had a couple of days and nights with very clear skies. You could even see the Milky Way (although a lot dimmer than in locations with less light pollution). I set up a Nikon D3s camera with a 16 mm f/2.8 fisheye lens to do star trails last night. The settings on the camera were manual (ISO 400, 16 mm, f/4, bulb). The exposure time was controlled with a MC-36 itervelometer (delay 5 sec, long 59 sec, interval 1 sec, N —). In camera long exposure noise reduction was turned off. The 1 second interval is required to allow the data to get transferred from the camera to the card, and effectively have one image taken every 60 seconds (1 minute). The MC-36 is required for exposures longer than 30 seconds. After the images were transferred to the computer, the RAW images were processed with Lightroom, and converted to JPG. The JPG images were then processed using Startrails.exe program to make composites. The following images show a single exposure, then startrail composites of 2 minutes, 5 minutes, 15 minutes, 30 minutes, 60 minutes, 120 minutes, and 300 minutes. Some high level clouds came in for the 300 minute (5 hour) image.
Backyard Summertime Night Sky Over New Jersey.
I used the images taken overnight to create a time-lapse video of the night sky. Although faint, you can see the Milky Way in New Jersey. The time-lapse video was created using Adobe PhotoShop CS5 and Adobe Premiere Pro CS5.
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Late August Star Trails. Since it looked like the sky was going to be clear last night, I left a camera out on the deck to get some star trail images. The first one was before midnight, and the second one after midnight. I did this set with a fisheye lens to get as much of the sky as possible. There is a tree in the front of the house that is blocking the northern star. I also used the images to create a time-lapsed video of the night sky.
Bats in Flight at Dusk. This evening as it was getting dark I noticed there were several bats flying around in my backyard. I knew that it would be a challenge to capture an image of the bats as they darted around chasing insects. The following images were taken with a Nikon D3s camera at 12800 or 102400 ISO using a 400 mm f/2.8 D II lens. The bats were moving too fast to follow using a tripod or monopod, so I was doing this hand-held. This is not a combination that you can hand-hold for long periods. I also wish that I had the VR version of this lens. There was no way that autofocus would work, so I manually set the focus distance to 25 feet and shot in high-speed burst mode anytime the bats flew by at about that distance. Of about 600 images, the following 6 were the best. I am open to suggestions how to do a better job capturing images of bats in flight.
