and IC5134 in LRGB
NGC 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. NGC 7129 is located just half a degree from
nearby cluster NGC 7142.(lower left)
The nebula is rosebud-shaped; the young stars have blown a large, oddly
shaped bubble in the molecular cloud that once surrounded them at their
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
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.
11/11/14 x 10 min each of RGB, 37 x 10min Luminance
Camera: Apogee U16M (16803) w Gen II Astrodon LRGB
Scope: 12.5" Planewave CDK
Mount: Paramount ME
Guiding SBIG ST402ME and Astrodon MMOAG
RGB and Luminance processing in PixInsight; Blend of Luminance w RGB
and clean-up of column defect and save-for-web in PS CC
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