By Dave Fuller on 12/22/2013 4:50 PM
There's really no two ways about it: The Orion Nebula is one of the best objects to see in the sky, and THE best nebula to observe. But how it is seen is dependent on many different factors, starting with your own eyes.

Rod and cone distribution

Fill my eyes.. with that double vision The retina of the human eye has two types of cells: Cones, and rods. Cones are concentrated at the back/center portion of the eye. This makes sense, given that during daylight hours is when we see the most color, and also have plenty of light to be able to see both in the center of our field of vision, and peripherally. This is called photopic vision.

But rods are the cells our eyes use at night. They pick up lower light levels, called scotopic vision but there's a catch: They also don't perceive color. So much of...

The Nightlight

This blog includes what to see in the night and daytime skies, thoughts on telescopes, binoculars, and other astronomy observing accessories and equipment, plus my own occasional notes on objects I've seen and observed. Oh, and the random theater or other "my take on life" post. In other words, there is always something interesting. Check it out.