City Slickers

Photo above: City Slickers III. Wind River area, Wyoming. Son Matt, Brother Dave, Son John Paul, Me J.P.

Small Talk

SMALL TALK: View the story of the air rifle that doubled the size of the United States. Fantastic bit of 2nd Amendment history re: Lewis and Clark.

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Spot Gold

Sunday, October 17, 2010

The Ring Nebula

See image to the right.

The Ring Nebula is located in the constellation Lyra, which is pretty much overhead in the night sky here in Utah about 8 PM. The very bright star Vega marks the constellation. The Ring Nebula was formed when a medium mass star, like our own Sun, burned out all its hydrogen. In order to achieve a new equilibrium where it can continue to burn, it expands into a Red Giant, throwing off clouds of matter in an expanding ring. The clouds are illuminated by the central star, which is formed after the Red Giant stage into a White Dwarf. You can just make out this White Dwarf in the center of the ring, which is viewed at a 30 degree angle from Earth, thus its elongation. I’ll add some color once I have imaged some additional frames. The Ring Nebula is a classic example of what are known as Planetary Nebula, due to their circular shapes and large size as seen through a telescope.

Technical Data: Taken with a Meade LX200 GPS 10 inch telescope with a Meade DSI Pro I ccd camera from my backyard in Utah. Twenty three 30 second exposures combined and processed in Photoshop 7.


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