NGC 7293 - also known as the Helix Nebula. (Also known as "The
Eye of God")
This nebula consists of the gaseous remnants of the outer layers
of a star blown away as it convulsed and collapsed at the end
of its nuclear-burning life. This type of nebula is quite common
and is known as a "planetary nebula" because it could quite
easily be mistaken by an uninformed observer as a planet due
to its round shape and apparent size. The remaining core of
the original star shines in the center of the nebula and is
a planet-sized white dwarf which was probably similar in size
to our sun during its nuclear-burning lifetime. NGC 7293 lies
at a distance of approximately 650 light years from Earth and
is situated in the constellation of Aquarius.
Image capture and processing information:
Date/Location: September 15, 2007 Lake Sonoma, Sonoma County,
California
Instrument: SBIG ST-2000XCM through a Celestron CM-1100 Schmidt-Cassegrain
reflector using an Optec NextGEN WideField 0.50X (NGW) Telecompressor
Focal Ratio: f5.0
Guiding: Self-Guiding camera
Conditions: Visually clear but hazy
Weather: 54 F, moderate breeze
Exposure: 10 minute single exposure
Processing: Focused and captured with CCDOPS. Image processed
using CCDOPS and Adobe Photoshop CS2