Location of Photo:
Pommier Observatory, Portland, OR
Date/Time of photo:
2009-07-29T15:34:23' /UT of midpoint of exposure
Compustar C14 Schmidt-Cassegrain @ f/7. Canon EOS 20D Exposure: 240 x 30 seconds = 2 hours at ISO 1600
M27 lies about 1200 light-years from Earth and has a diameter of about 2.4 light-years. It's expansion rate indicates that the red giant that spawned it erupted between 3000 and 4000 years ago. The white dwarf remanant of the red giant lies at the center of the nebula. This image shows some of the subtle detail inside the nebula. Sub-frames were 30-second unguided exposures calibrated with dark, flat and bias frames.