Aug 232014

North America Nebula

The North America Nebula looks like a map of North America. The nebula on the right resembles a pelican. Together, the North America and Pelican Nebulae are known as NGC 7000. This image was taken August 21, 2014. It represents a total exposure of 2 hrs 20 min, the result of 28 5-minute exposures.


Jul 222014

Great Nebula in Hercules


The Great Nebula in Hercules, M13 contains about 300,000 stars. It is a globular cluster that resides within our own Milky Way Galaxy. M13 is roughly 25,000 light years from Earth. (The Milky Way is somewhat greater than 100,000 light years in diameter.)

This image represents a total exposure time of 4 hours 26 minutes. Each individual exposure was 5 minutes long, using a Canon 6D DSLR camera on my  Takahashi Mewlon-250 telescope at f/19.2. The telescope was autoguided. Images were calibrated, aligned and stacked using Deep Sky Stacker 3.3.2. The resulting stacked image was edited using Adobe Photoshop CC.

Nov 262013

M42 Orion NebulaNext time you see the constellation of Orion, find the three stars forming the sword just beneath Orion’s belt. If you look carefully at the middle star in the sword, you may notice that it looks a little fuzzy. It looks smeared out because it isa nebula containing many stars, that glow amidst vast regions of gas and dust. The bluish color comes from reflected light emitted from hot, young stars that have recently formed in this “stellar nursery.” The reddish color is due the red light that is emitted when ionized hydrogen nuclei (protons) recombine with electrons and form neutral hydrogen atoms.

The large red and blue smear curving down toward the right is M42; the small pink arc connected to its upper left is M43. The bluish nebulae surrounding the bluish stars above surround a dark void are sometimes called the “Running Man.” Can you see his head, arms and legs?

I captured this photo on the evening of November 21 by combining 22 3-minute exposures with a Canon 6D camera, a Takahashi FSQ-106 telescope at f/5, autoguided.