Tag Archives: sky

Photographs: Death Valley, Photographs: Desert, Photographs: Nature

Moving Rock, Overcast Morning Sky – Racetrack Playa

April 4, 2010 G Dan Mitchell 4 Comments

A “moving rock” beneath overcast morning skies at the Racetrack Playa, Death Valley.

First a bit of background about “the Racetrack,” the location of the famous “moving rocks” in Death Valley National Park. About 25 miles out in the desert back-country of the park on a very bad gravel road there is an isolated and desolate playa known as “the Racetrack.” (For those considering a visit, getting to the Racetrack is no trivial matter. The drive takes nearly two hours one-way and the road is awful, with some of the worst wash-board surface I’ve ever encountered. There are absolutely no services along the road or at the Racetrack – no water is available and your cell phone won’t work.) The name of the place comes, in some circuitous way, from the mysterious rocks that have clearly traveled across the playa, sometimes many hundreds of yards, and left tracks gouged into the playa surface. The most likely explanation for the phenomenon involves a combination of a periodically flooded playa, extremely high winds, and rare occasions when it is cold enough to freeze the surface of collected water, locking the rocks in place and allowing the wind to move them. I’ve never heard anything concrete about the frequency of this alignment of conditions, but as far as I know no one has ever observed the rocks actually moving, nor is there any indication that they have moved recently.

I’ve been out there three times in the past, and had great conditions for doing photography. On this visit I had plans to photograph in sunset and sunrise light and to attempt night photography of the rocks under the full moon. (I did the latter once before, but was less familiar than I am now with how to best do this with a DSLR.) Since I’ve had such good luck with weather and lighting conditions in the past, I suppose I was due for less than optimum conditions… and that is what I encountered. Shortly after arriving at the playa the sky was covered by high, thin clouds. Except for a brief moment close to sunset this made late day photography difficult. The overcast stuck around until I left then next morning, making the planned full moon night photography an impossibility, and the morning light was also challenging.

That said, I’m still glad I went. Standing in the middle of this empty playa completely alone as the day ends or begins is an amazing experience that few people get to have. And I did manage to bring back a few photographs that I think will “work.” This one was shot fairly early in the morning at what might have been around sunrise, if a sunrise had actually occurred.

This photograph is not in the public domain and may not be used on websites, blogs, or in other media without advance permission from G Dan Mitchell.

Technical Data:
Canon EOS 5D Mark II
Canon EF 17-40mm f/4 L at 17mm
ISO 200, f/16, 1/8 second

keywords: moving, sliding, rock, race, track, racetrack, playa, death valley, national, park, california, usa, north america, morning, cloudy, sky, earth, cracked, dry, arid, desert, mountain, snow, covered, inyo, landscape, nature, travel, scenic, mystery, track, trail, phenomenon, lippencott, mine, road, stock

Photographs: Death Valley, Photographs: Desert, Photographs: Nature, Photographs: Night, Photographs: Southern California

Star Trails, The Manifold, Zabriskie Point

April 1, 2010 G Dan Mitchell 7 Comments

Star trails above the Manifold, Zabriskie Point, Death Valley National Park, California.

One of my goals on my late-March trip to Death Valley was to do some night photography, in particular to take advantage of the nearly full moon near the end of my visit. Some of my plans did not quite work out – for example, on the night when I intended to do night photography of the moving rocks at the Racetrack Playa it was cloudy all night! However, on the final night of my visit the weather gods cooperated and I was able to make a few exposures from Zabriskie Point as the moon rose. As if to partially make up for messing up the intended Racetrack shots, the “cloud gods” were kind enough to provide me with a few high thin clouds at Zabriskie. This was one of those wonderful occasions when things actually did go as planned!

Anticipating the full moon at Zabriskie, I made a point of camping in the vicinity of Furnace Creek at the Texas Springs campground. (I expect that my habits mystified a few nearby campers. I drove in at about 2:00 p.m., grabbed a site and “marked” it by leaving a chair and a tarp, and almost immediately left – not returning until nearly 10:00 p.m. Then I was up and gone well before sunrise.) In any case, I headed down to the Badwater area in the late afternoon to photograph sunset light on the salt flats and evening clouds – following an impromptu “dinner” at the back of my car at the Badwater parking lot. It was getting fairly dark by the time I finished up at Badwater, so I headed straight up to Zabriskie. By the time I arrived the moon was just coming up over the mountain range to the east, with its light at times filtering through high clouds. During the hour I was there I made three exposures. With exposure times in the 8 to 12 minute range and followed by “dark frame exposures” of equal length, this was a slow and quiet process.

This photograph is not in the public domain and may not be used on websites, blogs, or in other media without advance permission from G Dan Mitchell.

Technical Data:
Canon EOS 5D Mark II
Canon EF 24-105mm f/4 L IS USM
ISO 200, f/8, 787 seconds (not a typo!)

keywords:

Photographs: Northern California, Photographs: San Francisco, Photographs: Structures and Objects, Photographs: Textures, Photographs: Urban/Street

UFOs and Their Mission

March 30, 2010 G Dan Mitchell 1 Comment

Black and white photograph of a Mission District storefront with UFO flyer in the window, San Francisco, California.

The intricate and curved wrought iron work on the front of this building in San Francisco’s Mission District first caught my attention. As I came closer I thought that the underlying textures and patterns of blinds and stuff in the store and the street reflections might be interesting. Then I notice the small pamphlet taped to the window: “UFOs and their Mission.” The mystery deepens… :-)

This photograph is not in the public domain and may not be used on websites, blogs, or in other media without advance permission from G Dan Mitchell.

Technical Data:
Canon EOS 5D Mark II
Canon EF 50mm f/1.4 USM
ISO 200, f/8, 1/80 second

keywords: the, mission, san francisco, california, usa, north america, street, urban, city, store, window, storefront, wrought, metal, iron, curves, ufos, their, mission, sign, flyer, flier, reflection, newspaper, sill, blinds, sky, columbia, stock

Photographs: Night, Photographs: Northern California, Photographs: Structures and Objects, Photographs: Textures, Photographs: Urban/Street

Powerplant, Railroad Avenue – Mare Island Naval Shipyard

March 7, 2010 G Dan Mitchell 2 Comments

Night panoramic photograph of the powerplant building and other structures along Railroad Avenue at the historic Mare Island Naval Shipyard, Vallejo, California.

This is a bit of a first for me – a night photography stitched panorama. This image is composed of two separate exposures which were aligned and “stitched” into a single image in post. (As such, it could be a very large print!) Shooting from an elevated position, I shot almost directly north (as you can tell from the star trails in the larger version). The view looks up Railroad Avenue past the iconic power plant building with its smokestack that is visible from all over Mare Island.

I’m usually a bit casual about exposure time with long exposure night photographs. It isn’t that I don’t care – it is just that one has a ton of leeway when it comes to the very long exposures I typically use. For example, on a 3 minute exposure you would have to be off by three minutes to overexpose by one stop! So rather than use a stopwatch or an automatic timer I just count to myself. I’m usually will within a 10% error, and that is good enough. However, when stitching “good enough” often isn’t. The separate component frames really need to be quite similar, so in this case I resorted to using my watch to get relatively accurate 90 second exposures.

Another interesting factor in night photography is illustrated in this photo, namely the wildly varied colors of the light sources we deal with. There are three dominant sources in this image. The overall illumination comes from the full moon, which is quite similar to day light in terms of white balance. On the near wall of the brick power plant there is very “hot” and saturated yellow/red tinted light, probably from sodium vapor lamps. Near the left end of the image is an old wooden building that is illuminated by very green light, which I believe comes from mercury vapor lamps. I often chuckle a bit when people speak of “white balancing” the color in a scene like this. If you pick one source for your white balance you’ll throw the others even more out of line. My philosophy is usually to just go with what looks right!

Finally, the idea of making the stitched panorama came from the recently started Panocturnists web site, begun by people connected with The Nocturnes, the San Francisco Bay Area night photography group. I was intrigued by the idea of creating panoramic night photography, and I’ve done a few images along these lines on my two most recent visits to Mare Island.

(More of my Mare Island photographs)

This photograph is not in the public domain and may not be used on websites, blogs, or in other media without advance permission from G Dan Mitchell.

Technical Data:
Canon EOS 5D Mark II
Canon EF 50mm f/1.4 USM
ISO 200, f/8, 90 seconds

keywords: powerplant, building, structure, railroad, avenue, street, track, asphalt, sky, dark, night, photography, star, trail, color, light, yellow, red, blue, smoke, stack, cyclone, fence, brick, glow, panorama, panocturnes, minsy, san francisco bay area, window, antenna, vallejo, california, usa, north america, mare, island, naval, shipyard, stock

Photographer and visual opportunist. Daily photos since 2005, plus articles, reviews, news, and ideas.