Imaging telescope or lens: Celestron Edge 925HD
Imaging camera: Quantum Scientific Imaging QSI 683wsg-8
Guiding telescope or lens: Celestron Edge 925HD
Guiding camera: Starlight Xpress Ultrastar
Focal reducer: Astro Tech Field Flattener
Integration: 6.5 hours
Avg. Moon age: 16.02 days
Avg. Moon phase: 95.11%
Astrometry.net job: 1553099
RA center: 283.397 degrees
DEC center: 33.028 degrees
Pixel scale: 0.690 arcsec/pixel
Orientation: -179.002 degrees
Field radius: 0.225 degrees
The Ring Nebula, M57, is a planetary nebula in the constellation Lyra and lies 2300 light years away. It was formed when its red giant parent star expelled the ionized gas into the surrounding interstellar medium. What remains is the ionized shell of gas and a white dwarf star. You can also see the spiral galaxy IC 1296 at the 2 o’clock position relative to M57. This spiral is some 220 million light years away - some 100000x farther than M57, and 100x farther than M31.
This image was taken as a combination of some old LRGB data taken several years ago with an AT8RC along with the Ha data from this past summer using my Edge HD925.
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