The H.S. Mendenhall Observatory
The 24-inch Telescope Gallery
The first test image, which shows the spiral galaxy Messier 81, about 11 million light-years away.
Globular Star Clusters
The three globular star clusters below were imaged with a luminance (white light) filter.
Planetary Nebula Messier 27
The set of images below of planetary nebula Messier 27 illustrate how a color astrophoto is made. Four monochromatic images through red, green, blue, and luminance filters are first obtained. They are then combined on a computer to create the color composite image.
Composite of the Four Preceding Images