What is Astrophotography

Specialized form of Photography Combining Science, Art and Nature

Jan 1, 2009 Ronald Zincone

Astrophotography...what is it? Why is it pursued? Who pursues it? Where is it done? How is it accomplished and when?

Have you ever wondered if the night-sky could be captured on camera? Did you think that only the Hubble space telescope could accomplish such a feat? Introduce astrophotography.

Astrophotography: What is it?

Also known as astronomical, celestial or night-sky photography, astrophotography is a specialized form of photography which is not widely known and combines astronomy, photography and nature. According to author Bert Krages from his book Heavenly Bodies: the Photographer's Guide to Astrophotography, "astrophotography is one of the most demanding applications of optics". (Amherst Media).

Why is it pursued?

Astrophotography is unique in that you are attempting to expose in extreme low-light of celestial objects that are billions of miles or light years away. It is very challenging yet rewarding to the pursuer and may also open the door to scientific discoveries. Many astroimagers will tell you that capturing a deep-space subject, such as a galaxy or nebulae, light years away hooks you forever. Maybe most importantly is the astroimager's connection to the earth and our place in the cosmos.

Who pursues it?

Astrophotography is most-often pursued by individuals who have a special connection to science and art. Specifically, astronomy and photography. Astroimagers may be from any walk of life but many have made the jump into this "niche" from roots in amateur astronomy. Some are photographers who strive for the extremes while others have a general love for nature.

According to professor and astroimager David Malin, "Astrophotography attracts an interesting variety of people. Many are experienced camera users looking for new and unusual image-making opportunities. Other potential recruits are already fascinated by the night sky, astronomy and space". (Forward by David Malin, p.4, Astrophotography: An introduction to film and digital imaging, Arnold, H. J. P., Firefly Publishing).

Where is it done?There is a saying in real estate which also applies to night-sky photography: Location, Location, Location. Astrophotography is best accomplished in dark site rural areas where there is very little light intrusion. The darker the skies, the better the "seeing" is and the more successful your photo shoot.

How is it accomplished and when?

The most basic level of astrophotography, known as camera-on-tripod, can be pursued using only basic equipment as follows:

  1. 35mm SLR camera, film or digital, with a "Bulb" or "B" setting for long-exposures.
  2. For optics, a standard lens in the 50mm range with a f2.8 setting as a starter.
  3. A cable release (film) or remote shutter release (digital)
  4. A light weight but sturdy tripod

Basic astroimaging is a simple approach. Just aim the field of view on your target, set your lens to infinity and check focus, lock open the shutter for a specified time, close it and then on to the photo lab or your LCD screen.

Astrophotography is most often done during the dark hours of the night, mainly later at night and during the early morning hours.

The advantages to imaging later at night are:

  • less light pollution
  • steadier atmosphere
  • less air traffic
  • fewer interruptions

The disadvantages:

  • sleep deprivation
  • colder temperatures in colder regions
  • dew
  • the darkness at night

One of the keys to becoming a successful astroimager is frequent hands-on practice in the field. Taking good notes, burning lots of film or memory cards is a receipe for success!

Astroimaging can be done very successfully with just a modest budget. With some basic equipment, a dark-sky site and a little bit of patience, sacrifice and diligience, you too, can become an astrophotographer. Hopefully this article will have ignited a spark that may start you on a life-long journey to the stars!

For more information on astrophotography go to http://www.geocities.com/bcastronomy/Astrophotography.html

To view more astrophotos go to http://www.ronaldzinconephotography.com

The copyright of the article What is Astrophotography in Photography is owned by Ronald Zincone. Permission to republish What is Astrophotography in print or online must be granted by the author in writing.
Leonid Fireball in Orion, Ronald Zincone Photography
Leonid Fireball in Orion
    
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