To Heaven and Back

I could see to Heaven and back as I gazed into one of the darkest night skies I've seen in this part of Kentucky. Arching overhead the Milky Way haze spanned its silvery ribbon from horizon to horizon and the stars lit the night with a million beacons. Hovering just above the western horizon the crescent moon glowed with a golden flavor just before it disappeared leaving the realm of the night to the subtle glow of stars. For the next couple of hours I pointed my camera skyward and tracked the stars across the heavens capturing what I knew was there, all but invisible to the eye.

I've have for many years been fascinated with the universe and all of its magical glory. Until recently I had to settle spending time gazing at those wonders using photographs taken by professional astronomers. They are indeed amazing images. As a photographer, it was only natural that I migrated toward trying to capture the night sky myself. Surprisingly, I discovered just how relatively simple it is. Even so, it does require a bit of simple mechanical assistance to make those long exposures that are critical to capturing the subtle nature of the night sky.

In a previous post I wrote about building a crude sky tracker. As a first attempt, it did prove crude, but oddly enough it worked. In time I've been able to improved the design and have learned more about how to align it properly. The results have been far greater than I could have imagined.

What I was lacking more than anything was a very dark and clear night free from light pollution. This part of Kentucky can never be completely free of light pollution, but there are pockets of relatively dark locations even near where I live that offer at least a measure of opportunity. I discovered a place about three miles from my home that offered some potential. After a quick visit to a neighboring home to ask permission and to inform them that I was going be out and about in that area late at night, I arrived near midnight and was greeted with an amazing sky.

As my eyes grew more accustomed to the dark, more and more stars became apparent. The Milky Way haze as it rotated higher into the sky took on the appearance of a silvery ribbon. It was an amazing couple of hours whose silence was broken only by the subtle beeping of my shutter release timer. Fifteen seconds, a quarter turn of the tracker drive, thirty seconds, another quarter turn, one minute , two, then three. When that first image appeared I leaped into the air with a fist pump and a silent 'Yes...!' It was all finally coming together. The sleepiness I normally would have at that time of night was all but non-existent. I pointed the camera to different parts of the sky...tried different exposure lengths...different focal lengths. Several times I managed to kick the leg of my tripod knocking the tracker alignment off kelter...reset...I continued into the evening. Two A.M. came and went...I could have stayed all night...but knew it must end soon.

Astrophotography has proven itself as a challenge and fascinating form of the art of photography. There are those who do not share that same enthusiasm and I completely understand. Not everyone will carry the same levels of interest. I would suspect because of the nature of the requirements...being out late at night...would have something to do with that.

I've been wanting to start a new long term project but wanted it to be something new and different. I believe the opportunity has presented itself.

Keith

Impressions

One definition of Impression is: A strong effect produced on the intellect, feelings, conscience...the first and immediate affect of an experience or perception on the mind.

Photography is heavily influenced by impression.  In essence virtually every photograph is an impression of a single moment of light. Impression in return is heavily influenced by shape, form, color, and texture. With this being the case…just how can we effectively use the idea of Impression to create interesting photographs?

In a photograph, impression implies something that looks familiar but is somehow different. When we see an impressionistic photograph…what we’re looking at is exactly that…something that is oddly familiar…but it just doesn’t quite fit that normal state of structure we demand in our lives. Our brain wants to perceive the image in one way and yet interpret it another way.

Let me show you an example.

In this photograph we see an impressionistic view of a group of trees. What we see looks familiar, yet the way we perceive it visually tends to affect our view as though it is a series of lights and darks, vertical and angled lines that flow across a dark background. Why it appears this way is because of the isolation achieved by using a telephoto lens. Visually, if we were standing in this location what we would see is a wide angle view of the entire spectrum of the scene…it would…well look like what we would expect a wooded area to look like. When we tighten the view…isolate a smaller section of the larger view…we can achieve this impresionistic capture of a group of trees.

Here is another example.

Reflections on water are in essence all about impression. Water will impart a softer feel to a reflected image…factor in a few light ripples and the light is broken into a myriad of shapes and textures. We know it is a reflection…we sense that the reflected light involves some fall-like colors…yet visually we cannot ascertain the exact nature of what is being reflected. In this case…it’s all about light, shape, and color.

When I seem to grow stale in my photography, I often fall back on the idea of capturing impressions as opposed to capturing physical likeness. By doing so, it allows my seeing to shift from what it wants to naturally lock onto, and forces it to think in terms of artistic flavors. It changes the way your mind perceives the world and allows it to isolate visual cues and shape them into a form and composition that becomes a refreshing perspective. This approach will improve your ability to see physical likeness from a more artistic point of view.

Keith

AstroPhotography - Capturing the Night Sky

5 minute Exposure Looking North East - Photographed using Manually
Operated Barn Door Tracker
Constellations: Corona Boreals - Hurcules - Bootes - Part of Draco

Many years ago for Christmas I received a small dime-store variety telescope. It was one of the reflecting types using a smallish 2 1/2 maybe 3 inch mirror and a single low power eyepiece. With that simple device another dimension of the night sky opened. I was able to easily see craters on the moon and when pointed to a dark patch of sky, new stars became visible. The moons of Jupiter spread like shining diamonds shifting their position each evening. On one evening, a particularly bright object caught my attention and I pointed the telescope toward it. After a few moments of searching trying to center the object in the narrow field of view, a small, somewhat fuzzy object appeared. To either side looped what appeared to be handles. I withdrew my eye from the viewer...then looked again. Saturn!...the ringed planet. There was no doubt what it was even to my limited knowledge.

I've never owned a quality telescope...just too expensive, but I've always wanted to own one. Oddly enough the last couple of years I've started exploring another aspect of photography I never realized was so relatively easy to do; AstroPhotography.

Photographing the night sky does not require a lot of special equipment. Almost any lense from 50mm on down to 16mm will work. A tripod is a must and for the most part a remote shutter release is all but required. What is most important is a dark sky and that requires getting away from the light pollution of the city. The darker the better. Photographing the moon is less of an issue because it is so bright, but to capture the night sky...constellations and even the Milky Way haze...the sky must be a moonless, dark night with clear skies.

500mm - Tightly Cropped

This type of photography can be as complicated or simple as you want to make it. One easy way is to mount your camera on a tripod...set the exposure to manual / Bulb using manual focus set to infinity, and an ISO of 800 to 1600. The aperture should be opened to the maximum your lense will allow (f3.5 / f/4.0 is common)...attach the remote release...point the camera toward a patch of clear sky...press and hold the release and count to thirty. You will be surprised at what you will see. Using up to a 50mm for thirty and even 45 seconds will not produce any noticeable 'star trailing' caused by the rotation of the earth. For longer exposures, you will need some kind of tracking device.

Shanty Hollow - Includes Part of
the Milky Way near the top

Tracking devices are contraptions that allow the photographer to rotate the camera on the same plane as the stars to follow the stars across the sky for an extended period of time. Of course you can purchase expensive computerized equipment to do this, or you can build one that will work remarkably well. They are called 'Barn Door Sky Trackers' and there are numerous designs ranging from simple hinge types to more sophisticated contraptions that rival professional quality equipment. Some of these are motor driver, but many of the simpler ones are driven by hand.


I recently built one and spent some time trying to make it work...with mixed results...more because of the operator than the design. I discovered that the key ingredient to make for proper tracking is an accurate setup...it has to be oriented to the Pole Star to allow for correct tracking. What started as a simple design has evolved into a system with fine tuning dials and spotter scope pole star orientation...I'm still trying to find the right combination.

AstroPhotography is a fascinating way to explore the night sky and provides another avenue of artistic expression. This summer I hope to explore this method in more detail.

Keith