Reflection Nebula NGC 7129 - AR 21h 43m 01s DEC +66° 06' 02"
Date/Place2015-07-18 at Saint Barthèlemy (AO)
ScopeGSO RC10 Truss
IntegrationLRGB Composition.
L:18x600 sec bin 1x1
RGB:9x600 sec. bin 2x2 for each channel
CCD Temp: -15°C
Average FWHM: 2.85 arcsec
CommentNGC 7129 is a reflection nebula located 3,300 light years away in the constellation Cepheus. A young open cluster is responsible for illuminating the surrounding nebula.A recent survey indicates the cluster contains more than 130 stars less than 1 million years old. The young stars have blown a large, oddly shaped bubble in the molecular cloud that once surrounded them at their birth. The rosy pink color comes from glowing dust grains on the surface of the bubble being heated by the intense light from the young stars within. The ultra-violet and visible light produced by the young stars is absorbed by the surrounding dust grains. They are heated by this process and release the energy at longer infrared wavelengths as photographed by the Spitzer Space Telescope.(Text adapted from Wikipedia)