a. v. ley
NGC 7293, The Helix Nebula
A planetary nebula in the constellation Aquarius, approximately 700 light years from earth. Planetary nebulae are the remains of modestly sized stars, similar to our sun, which, having expended their nuclear fuel shed mass and collapse to white dwarfs. The Helix Nebula, because it is relatively close to earth--compared to other planetary nebula--appears very large, approximately one half the diameter of the full moon. This image was created at the General Nathan Twinning Observatory (GNTO), the dark sky site of The Albuquerque Astronomy Society (TAAS) with a Celestron C-11 HD w/ focal reducer operating at 1960 mm f.l. and f/7, an SBIG ST4000XCM camera and a Losmandy G11 mount. Fifteen x 10 minute subs were created at -10 C, along with darks and flats. Processing was done in DSS and PS CS2. You can purchase a print of this image at: alan-ley.artistwebsites.com/ Thanks for looking!
NGC 7293, The Helix Nebula
A planetary nebula in the constellation Aquarius, approximately 700 light years from earth. Planetary nebulae are the remains of modestly sized stars, similar to our sun, which, having expended their nuclear fuel shed mass and collapse to white dwarfs. The Helix Nebula, because it is relatively close to earth--compared to other planetary nebula--appears very large, approximately one half the diameter of the full moon. This image was created at the General Nathan Twinning Observatory (GNTO), the dark sky site of The Albuquerque Astronomy Society (TAAS) with a Celestron C-11 HD w/ focal reducer operating at 1960 mm f.l. and f/7, an SBIG ST4000XCM camera and a Losmandy G11 mount. Fifteen x 10 minute subs were created at -10 C, along with darks and flats. Processing was done in DSS and PS CS2. You can purchase a print of this image at: alan-ley.artistwebsites.com/ Thanks for looking!